JPH0444943Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a flow path switching device that connects two water spouts, such as between a bath-side spout and a shower-side spout, and more specifically, a flow path switching device that connects cold water to the left and right. Separately from the hot water mixing pipe, the hot water mixing pipe is formed in a cross joint shape, and is provided with hot water inflow pipe parts and hot water outflow pipe parts communicating with the bath side spout and the shower side spout at the top and bottom, respectively. A flow path switching device comprising an on-off valve provided in a hot water pipe leading to a bath-side water spout, and by opening and closing this on-off valve, hot water can be supplied to a shower-side or bus-side water spout. The present invention relates to an improvement of the hot water mixing pipe used in a flow path switching device that is completely different from the hot water mixing faucet equipped with a two-way switching valve in the center of the cross-jointed pipe.

[Conventional technology]

As a conventional device of this kind, the
No. ``Flow path switching device'' is known. FIG. 5 shows the main parts of this device. In a flow path switching section 10 equipped with a cold water inlet 11, a hot water inlet 12, and two outlets 13, 14, a cylinder communicating with one outlet 13 is shown. 15 protrudes from the outlet 13, and the tip opening 15' of the tube 15 is open so as to face the other outlet 14.

[Problem that the invention attempts to solve]

However, in general, the pressure of the cold water from the cold water inlet 11 side is greater than that of the hot water from the hot water inlet 12 side, so in the structure as described above, the cold water around the cylinder 15 is The hot water enters the hot water inlet 12 side through the space, and the mixed amount (mixing ratio) of hot water and cold water may vary, which has the disadvantage that it is difficult to obtain mixed hot water at a predetermined temperature.

Therefore, an object of the present invention is to provide a hot water mixing pipe that can obtain mixed hot water with a stable mixing ratio.

[Means for solving problems]

The structure of the present invention to achieve the above purpose is as follows:
The present invention will be explained with reference to FIGS. 1 to 5, which correspond to embodiments. The present invention has cold water and hot water inflow pipes on the left and right sides, hot water outflow pipes on the top and bottom, and is formed in a cross-joint shape. In addition, the inner wall of each inflow pipe section is inclined with respect to the inflow direction of cold water and hot water, respectively, so that the pipes of each inflow pipe section are open to only one of the hot water and hot water outflow pipe sections. A pair of partition walls each having a surface are extended, and the ends of each partition wall are opposed to each other and are formed by protruding into the hot water outflow pipe section of one of the partition walls.

[Effect]

According to the above means, a pair of partition walls are interposed between the cold water inlet and the hot water inlet, and each of the partition walls shields both the inlets in the plane direction, and the tip of each of the partition walls is Since they are made to face each other and open into one outlet, the hot water hits each partition wall and flows approximately in the direction of flow.
The hot water is converted smoothly by 90 degrees and flows into one of the outflow pipes. Therefore, unlike in the past, cold water and hot water do not directly collide head-on at the central meeting point where four pipes meet, so cold water does not enter the hot water side during mixing, resulting in a stable flow. Mixed hot water with a good mixing ratio can be obtained.

In addition, the direction of water and hot water is smoothly changed by the inclined partition wall, resulting in less flow resistance and smooth water and hot water flow.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

Figure 1 shows the arrangement of a so-called recessed flow path switching device embedded in a wall so that a mixture of hot water and cold water is spouted only from either the bath-side spout or the shower-side spout. In the figure, a water valve 31 and a hot water valve 32 are connected to the left and right sides of the cross-shaped hot water adjustment unit 20, which are used to open and close cold water and hot water, and to adjust the supply amount. In addition, a bus-side water spout 33 is connected to the lower side, and a shower-side water spout 34 is connected to the upper side, and the bus-side water spout 33 is provided with an on-off valve 35 for switching the flow path between the bus side and the shower side. provided.

FIGS. 2 and 3 show details of the hot water adjusting section 20. The hot water adjusting section 20 has a cold water inlet 21 and a hot water inlet 22 on the left and right, an outlet 23 on the top and the bottom, and an outlet 23 on the top and bottom.
24, respectively, are integrally joined in a criss-cross shape to form a cross joint, and the cold water inlet 21 and the hot water inlet 2 are integrally connected to each other in a cross shape.
The water valve 31 and the hot water valve 32 are installed on the outer periphery of the pipe end on the second side.
Threaded portions 21a and 22a are provided for connection to the bath-side water spout 33 and shower-side water spout 34 on the outer periphery of the pipe ends of the outflow ports 23 and 24. 24a.

The pipe inner wall 21' on the cold water inlet 21 side and the pipe inner wall 22' on the hot water inlet 22 side correspond to the respective inflow directions of the cold water flowing in from the cold water inlet 21 and the hot water flowing in from the hot water inlet 22, respectively. Flat partition walls 25 and 26 having inclined surfaces 25' and 26' are extended. Tips 25a and 26a of the partition walls 25 and 26 are opened into one outlet 23 (in the illustrated example, the outlet to the bus-side spout 33) so as to face each other. In other words, the pipes of the cold water inflow pipe section and the hot water inflow pipe section are separated by partition walls in the direction of inflow.
The angle is changed by 90 degrees to open into the hot water outflow pipe section to which the water spout 33 on the bus side is connected.

Next, to explain the operation of the above embodiment, first,
In the state where the on-off valve 35 provided at the bus side water spout 33 is open, the water valve 31 for cold water and hot water,
When the hot water valve 32 is opened, cold water and hot water flow through the inlet 21,
Hot water flows into the adjusting section 20 from 22, and partition walls 25 and 26 extend from the pipe inner wall 21' of the cold water inlet 21 and the pipe inner wall 22' of the hot water inlet 22, respectively. , 26 tip 25
Since a and 26a are opened into the outlet 23 so as to face each other, cold water and hot water are smoothly guided to the outlet 23 without interfering with each other, and are mixed to form mixed hot water at an appropriate temperature. In this case, the hot water passes through the outlet 23 as it is and is discharged from the bath-side spout 33.

Next, when the on-off valve 35 is closed, the mixed hot water that had been flowing toward the bath-side spout 33 is removed from the tip 2.
5a and 26a, flows toward the upper outlet 24, and is discharged from the shower outlet 34.

In the above embodiment, the partition walls 25 and 26 are provided with bent portions 25b and 26b, but as shown in FIG. It may be set. in short,
Partition walls 25 and 26 are installed to prevent cold water and hot water from the cold water inlet 21 and the hot water inlet 22 from interfering with each other.
should be formed. Therefore, each partition wall 2
5 and 26 are desirably shaped in such a way that they spread out in a plane so as to block the respective inflow ports 21 and 22 (see FIG. 3).

[Effect of idea]

As described in detail above, according to the present invention, cold water and hot water are not brought together directly on the extension line of the axis of both pipes, as is the case in the past, but by changing the flow direction of each by about 90 degrees. Since the outlet pipe is open, cold water and hot water can mix without interfering with each other. Therefore, a mixed hot water with a stable mixing ratio can be obtained.

In addition, by slanting the partition wall with respect to the inflow direction of cold water and hot water, the direction of water and hot water can be changed smoothly, and the flow path resistance is lower than that of a partition wall that changes direction 90 degrees straight, resulting in smooth flow. Water and hot water will be available.

Furthermore, according to the above structure, which is obtained by a cross joint-shaped pipe portion and a pair of partition walls, the overall structure is extremely simple, and has the advantage that the number of connecting parts such as screwing or fitting can be extremely reduced. be.
Therefore, it is possible to integrally mold the product by casting, etc., and it is easy to manufacture.It also has high durability, with little leakage of water or hot water, and almost no need to replace parts, etc., even after many years of use. A hot water mixing pipe that is advantageous in terms of maintenance and maintenance can be obtained.

[Brief explanation of drawings]

Fig. 1 is a layout diagram of a hot water mixing pipe according to the present invention, Fig. 2 is a cross-sectional perspective view of the main part, Fig. 3 is a cross-sectional plan view of the main part, and Fig. 4 is a main part showing another embodiment. FIG. 5 is a longitudinal sectional view of the main parts of a conventional example. 20...Hot water adjustment section, 21...Cold water inlet, 2
2... Hot water inlet, 21', 22'... Pipe inner wall, 2
3, 24... Outlet, 25, 26... Partition wall, 2
5', 26'... Inclined surface, 25a, 26a... Tip portion, 35... Open/close valve.

Claims (1)

[Scope of utility model registration request] It is provided with inflow pipe parts for cold water and hot water on the left and right, and hot water outflow pipe parts at the top and bottom, respectively, forming a cross joint shape, and the pipes of each of the inflow pipe parts are connected to one of the hot water outflow pipe parts. so that it opens only to one side,
A pair of partition walls having surfaces inclined with respect to the cold water and hot water inflow directions are extended from the pipe inner wall of each inflow pipe section, respectively, and the ends of these partition walls are arranged to face each other so that one hot water outflow pipe is connected to the other hot water outflow pipe. A hot water mixing pipe that extends into the interior.