JPH04131434A - Drain valve device with thermo for initial cooling water - Google Patents

Abstract

PURPOSE:To enable initial cooling water to be drained by opening a warm water discharging port and a drain port, to work water pressure in a mixing chamber, to an intermediate valve chamber and to work a relief valve, and by feeding water in the mixing chamber, to the discharging port and drain port. CONSTITUTION:When an open air temperature is low and hot water in a hot water feeding branch conduit line 2a and a tap mainbody 9 is cool, then a valve port 17 is blocked by thermo-valve 15. When an opening or closing valve 30 is opened, then water pressure in a mixing chamber 14 is worked on the valve body 24 of an interlocking valve 26, and the valve 26 is moved, and valve ports 23, 22 are opened. The water in the mixing chamber 1 flows to the side of the opening or closing valve 30 through a warm water discharging port 12, and flows into a warmed water tank 5. Through the valve port 23 and a bypass passage 29, the water pressure in the mixing chamber 14 exerts on a relief valve 20, and the valve 20 is moved, and a valve port 22a is opened, and residual water in an intermediate valve chamber 16 is drained to a drain port 13 through a small hole 19. Besides, from the valve port 23 to the passage 29, the water in the mixing chamber 14 flows, and flows to the drain port 13 though the valve ports 22a, 22, and is drained into a toilet bowl.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is used in shower toilets, vanities, etc. in hotels etc. where hot water and cold water are supplied separately, and the initial cold water is supplied to the user. The present invention relates to a drain valve device designed to reduce the amount of water as much as possible without causing discomfort.

[Conventional technology]

In facilities used by a large number of people, such as hotels where hot water and cold water are individually supplied, for example, shower toilets and the like are constructed as shown in the schematic diagram of FIG. 4. That is, a water supply main pipe 1 and a hot water supply main pipe 2 are provided to penetrate each floor of the building,
For example, in a shower toilet installed in each room on each floor, hot water and water are introduced from the water supply main pipe 1 and hot water supply main pipe 2 to a thermovalve 3 via branch pipes 1a and 1b.

The thermovalve 3 automatically adjusts the opening areas of the hot water and water inlets to obtain hot water at a desired temperature.

The hot water thus obtained is temporarily stored in a hot water tank 5 via a two-way switching type drain valve 4, and is discharged from a cleaning nozzle 6 toward the user's private parts as necessary. ing. In addition, in the heat retention tank 5, the stored water is kept at a desired temperature by a heat retention heater 7. The washing water is discharged by opening the drain valve 4 and communicating the thermovalve 3 and the hot water tank 5. By communicating the thermo valve 3 and the hot water tank 5, the thermo valve 3
The mixed hot water is supplied to the hot water tank 5, and as a result, the water stored in the hot water tank 5 is discharged from the wash water 6 in an amount proportional to the inflow amount.

[Problem to be solved by the invention]

Therefore, in cold regions and when the temperature is low such as in winter, 1
, if you continue not using the shower/toilet,
In particular, the residual water in the pipe between the hot water supply branch pipe 2a and the thermovalve 3 becomes cold. This large amount of residual water suddenly lowers the temperature of the water stored in the hot water tank 5 at the beginning of using the shower toilet. Therefore, the temperature of the cleaning water discharged from the cleaning nozzle 6 toward the private parts of the human body becomes low at the beginning of use, which has the drawback of causing discomfort to the user.

In view of this, conventionally, when the temperature is low such as in winter, the drain valve 4 is switched to communicate the thermovalve 3 to the drain side for a predetermined period of time, such as 20 seconds after the start of use. I'm trying to drain it. In particular, after the cold water in the branch pipe 2a has been discharged, the drain valve 4 is switched to communicate the thermovalve 3 and the hot water tank 5 to bring the system into normal use.

However, in this case, approximately 20
The user has to wait for several seconds for warm flushing water to be discharged, which is extremely inconvenient and reduces the value of the shower toilet. In addition, waiting for 20 seconds without doing anything while using the shower/toilet felt much longer than it actually was, and had the disadvantage of giving an unpleasant feeling that was different from the initial cold water. .

[Means to solve the problem]

The present invention improves and eliminates the above-mentioned conventional problems by draining a part of the initial cold water.
To provide a thermostatic drain valve device which eliminates waiting time by setting the amount of cold water discharged at the beginning of use to such an extent that the drop in temperature of hot water does not give discomfort to the user.

Then, the above Il! The means adopted by the present invention to solve the problem is a thermo valve disposed in a mixing chamber for hot water and water;
A hot water discharge port and a drain port connected to the mixing chamber, an interlocking valve disposed straddling between the hot water discharge port and the drain port, and an interlocking valve provided between the mixing chamber and the drain port, It is characterized by comprising an intermediate valve chamber communicating with the mixing chamber, a relief valve having a small hole disposed in the intermediate valve chamber, and a bypass passage communicating the hot water outlet and the intermediate valve chamber. This is a drain valve device with a thermostat for initial cold water.

[For production]

When the hot water in a branch pipe that supplies hot water is cooled by the outside air, the thermo valve closes off the mixing chamber and the intermediate valve chamber. When use starts in this state, the interlocking valve opens the hot water discharge port and the drain port. Therefore, the water pressure of the mixing chamber also acts on the intermediate valve chamber via the bypass passage, and the relief valve opens the drain port. As a result, the water in the mixing chamber is supplied directly to the hot water outlet, and is also supplied from the bypass passage to the drain via the intermediate valve chamber.

Therefore, the amount of cold water supplied from the hot water outlet at the beginning of use is reduced by the amount discharged from the drain port, and the user does not feel uncomfortable.

〔Example〕

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below based on embodiments shown in the drawings. Note that the same reference numerals as in the conventional case represent the same members.

1 to 3 are longitudinal sectional views showing various usage states of a drain valve device 8 showing one embodiment of the present invention.

As shown in the figure, in this drain valve device 8, a faucet body 9 is provided with a water supply port 10, a hot water supply port 11, a hot water discharge port 12, and a drain port 13. A mixing chamber 1 is provided in the portion of the faucet main body 9 that communicates with the water supply port 10 and the hot water supply port 11.
4, and the fitting chamber 14 is provided with a thermo valve 15 that mixes hot water and water while automatically adjusting the temperature to a desired temperature.

An intermediate valve chamber 16 is provided adjacent to the mixing chamber 14, and both chambers communicate through a valve port 17 of a No.-Mo valve 15.

The thermovalve 15 is urged toward the valve port I7 by a spring 18. A relief valve 20 having a small hole 19 is disposed in the intermediate valve chamber 16 . This relief valve 20 is
The spring 21 is normally biased in a direction to close the valve port 22a of the drain port 13.

On the other hand, an interlocking valve 26 having valve bodies 24 and 25 is located between the valve port 23 of the hot water outlet 12 and the valve port 22 of the drain port 13.
is fitted and installed, and the spring 27 normally closes the valve port 22.
and 23 are biased in the direction of closing them. Further, the valve port 23 of the hot water outlet 12 is connected to the mixing chamber 1 through a passage 28.
4, and is also connected to the intermediate valve chamber 16 through a bypass passage 29. Furthermore, hot water outlet 1
2 is connected to a hot water tank 5 via an on-off valve 30, and a drain port 13 is connected to a drain passage or the like that communicates into the toilet bowl of the toilet main body.

Next, the operation mode of the drain valve device 8 configured in this way will be explained.

First, a case will be described in which the outside air temperature is warm, the hot water in the hot water supply branch pipe 2a is sufficiently hot even when not in use, and the temperature of the hot water in the faucet body 9 is above a certain temperature. In this case, the state when not in use is as shown in FIG. In other words, the on-off valve 30 is closed, and the valve bodies 24 and 25 of the interlocking valve 26 are connected to the valve port 24 of the hot water outlet 12, respectively.
and the valve port 22 of the drain port 13 is closed. Therefore, hot water is not discharged from both the hot water discharge port 12 and the drain port 13.

In such a state, when the user of the shower toilet opens the on-off valve 30, the hot water pressure in the mixing chamber 14 is increased by the interlocking valve 26.
The interlocking valve 26 moves to the right in FIG. 1 against the biasing force of the spring 27, and enters the state shown in FIG. 2. That is, the valve ports 23 and 22 are opened. Therefore, the hot water in the mixing chamber 14 is discharged through the valve port 23 to the on-off valve 30 through the hot water discharge port 12, and further discharged from the hot water tank 5 through the cleaning nozzle 6 to the private parts of the human body.

It goes without saying that the temperature of the discharged water in this case is at a desired temperature.On the other hand, in the case of the valve port 22, the other valve port 22a of the chamber in which the valve body 25 slides is connected to the relief valve 20.
is blocked by. Therefore, it flows from the mixing chamber 14 through the valve port 17 to the intermediate valve chamber 16, and further flows to the relief valve 2.
A small amount of hot water that has passed through the small holes 19 is discharged to the drain port 13. The hot water discharged from the drain port 13 in this case is wasteful, and it is important to reduce it as much as possible. Therefore, it is preferable that the diameter of the small hole 19 be smaller as long as the sliding movement of the relief valve 20 can be ensured.

Next, a case where the outside air temperature is low and the hot water in the hot water supply branch pipe line 2a and the faucet main body 9 is cooled will be described with reference to FIG. 3. As shown in the figure, in this state, the thermovalve 15 detects the temperature of the cooled hot water in the mixing chamber 14 and enters into the thermovalve 15, closing the valve port 17. ing. When the user of the shower toilet opens the on-off valve 3o in such a state, the water pressure of the mixing chamber 14 acts on the valve body 24 of the interlocking valve 26.
The interlocking valve 26 moves to the right in the figure and opens the valve ports 23 and 22.
to open.

Therefore, water in the mixed water 14 flows to the on-off valve 30 side through the hot water outlet 12 and flows into the hot water tank 5.

At the same time, water pressure in the mixing chamber 14 acts on the relief valve 20 through the valve port 23 and the bypass passage 29.

On the other hand, the intermediate valve chamber 16 communicates with the atmosphere through the small hole 19 and the valve port 22 of the relief valve 2o. Therefore, the relief valve 20 moves to the right in the figure due to the water pressure, and the valve port 2
Open 2a. At that time, the residual water in the intermediate valve chamber 16 is
It is discharged to the drain port 13 through the small hole 19.

As a result, the mixing chamber 14 is transferred from the valve port 23 to the bypass passage 29.
water flows through the outlet 1 through the valve ports 22a and 22.
3 and is discharged into the toilet bowl of the toilet bowl. In this case, the cold water in the mixing chamber 14 discharged from the discharge port 13 is
Since the supply water pressure acts as it is, a large amount of water will flow.

In short, if the initial cold water in the mixing chamber 14 has a low water temperature, the initial cold water is discharged from both the hot water discharge port 12 and the drain port 13. Thereby, it is possible to reduce the amount of cold water supplied from the hot water outlet 12 to the hot water tank 5.

The amount of cold water flowing into this hot water tank 5 is
It is important to ensure that the temperature does not drop below a certain level when mixed with the hot water stored inside. In other words, it is important to lower the temperature to a level that does not cause discomfort to the user.

In this way, the initial cold water is transferred to the hot water outlet 12 and the drain port 13.
When hot water is discharged from the hot water supply branch line 2a and begins to be supplied into the mixing chamber 14, the thermovalve 15 detects this and shifts to the normal usage state shown in FIG.

The present invention is not limited to the embodiments described above,
For example, in addition to shower toilets, it can also be applied to faucets in bathroom vanities, kitchens, etc.

〔Effect of the invention〕

As explained above, in the present invention, if there is an influence of initial cold water, by discharging cold water from both the hot water outlet and the drain outlet, the cold water is supplied from the hot water outlet to the hot water tank of the shower toilet, etc. By reducing the amount of cold water used, the temperature can be lowered to a level that does not cause discomfort to the user. Furthermore, after the initial discharge of cold water is finished, it is possible to automatically return to the normal usage state, which is extremely convenient. Therefore, compared to the conventional case in which the initial cold water is completely discharged, there are advantages in that the waiting time is shortened and the usability is improved.

[Brief explanation of drawings]

1 to 3 are vertical cross-sectional views showing various states of use of a drain valve device according to an embodiment of the present invention, and FIG. 4 is an overall schematic view of a conventional shower toilet. l...Water supply main pipe 2...Hot water main pipe 1a...
Water supply branch pipe 2a... Hot water supply branch pipe 8... Drain valve device 12... Hot water outlet 13... Drain port
14...Mixing chamber 15...Thermo valve
16... Intermediate valve chamber 19... Small hole 20.
...Relief valve 26...Interlocking valve 29...
Bypass passage patent applicant Inax Co., Ltd. Agent Patent attorney Toshihiko Uchida

Claims (1)

[Claims] 1. A thermo-valve installed in the mixing chamber for hot water and water, a hot water outlet and a drain port connected to the mixing chamber, and a thermo-valve installed between the hot water outlet and the drain port. and an interlocking valve,
An intermediate valve chamber provided between the mixing chamber and the drain port and communicating with the mixing chamber, a relief valve having a small hole disposed in the intermediate valve chamber, and the hot water discharge port and the intermediate valve chamber. A drain valve device with a thermostat for initial cold water, characterized in that it is configured with a communicating bypass passage.