JP2555862B2 - Bath drop-off valve for hot water supply - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention intervenes between a hot water supply passage from a water heater and a bath heating circulation passage to drop water from the hot water supply passage into the bath heating circulation passage and not supply hot water. The present invention relates to an edge-cutting valve device for hot-water supply that drops a bath into the air-charge chamber.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional rim cut-off valve device for dropping hot water into a bath. This device will be described. Reference numeral 10 denotes a bath heat-up heat exchange can body, and a bath heat-up circulation circuit 30 including a bath return pipe 31 and a bath going pipe 32 is connected to the can body 10. The bathtub water is driven by the circulation pump 41 to enter the bath heat-up canister 10 from the bath return pipe 31, is heated, and circulates through the bath pipe 32 to the bathtub. In addition to the circulation pump 41, the bath return pipe 31 is provided with a water flow switch 42, a bath temperature sensor 43, and a bath water level sensor 44. A hot water supply path 51 for automatic hot water supply from a water heater (not shown) and a water supply path 52 as necessary are provided, and these are supplied to the circulation path 30
Connected to. The cutoff valve device 60 includes a hot water supply valve including a hot water supply solenoid valve 61a for opening and closing the passage of the hot water supply passage 51 and a water supply solenoid valve 61b for opening and closing the passage of the water supply passage 52, and a first check valve 62 provided downstream thereof. A second check valve 63 and a dropping hot water supply path 64 are provided downstream of the first check valve 62, and the first check valve 62 is pushed down, so that the upper opening is closed. An overflow chamber 65 is provided.
The 65 is provided with an overflow solenoid valve 66 and a drain solenoid valve 67. The drop hot water supply passage 64 is connected to the bath return pipe 31 of the reheating circulation passage 30 via a three-way switching valve 70.

[0003] Hot water is supplied to the bath tub through a controller 80 by a command from a remote controller or the like (not shown) via a controller 80.
a, if necessary, the water supply electromagnetic valve 61b is opened, and the three-way switching valve 70 connects the hot water supply path 64 and the bath return pipe 31 to connect the hot water supply path 51 and the hot water supply path 52 to the hot water supply valve 61a.
, 61b, the first check valve 62, the second check valve 63, the falling hot water supply passage 64, and the three-way switching valve 70 to enter the bath return pipe 31. The bath return pipe 31 is provided with a bypass path 31a for both transports and a check valve 31b provided in the bypass path 31a. Part of the hot water introduced into the bath return pipe 31 by the bypass passage 31a and the check valve 31b can be directly introduced into the bathtub from the bath return pipe 31 through the bypass passage 31a, and a smooth bath by both conveyances can be obtained. Hot water is supplied. The overflow solenoid valve 66 is opened when the hot water supply is stopped, and supplies air from the overflow chamber 65 to the first check valve 62 to cut off the continuation of the water flow and perform edge cutting.
In addition, the drainage electromagnetic valve 67 leaks at the time of hot water supply and enters the overflow chamber 65, or drops from the bath additional heating circulation circuit 30 side and flows back through the hot water supply passage 64 and the second check valve 63. This is a valve for draining water that has entered the overflow chamber 65.

[0004]

However, in the above-mentioned device, the hot water supply passage 51 and the water supply passage 52 are passages for supplying hot water to the bathtub, but the hot water supply passage 51 and the water supply passage 52 are used in other kitchens. It has a common pipeline with the hot water supply channel for general hot water supply and the water supply channel for general water supply, and is often branched on the way. For this reason,
For example, when a hot water tap or a general water tap for general hot water is opened / closed, the pressure fluctuation in the pipeline caused thereby is transmitted to the hot water supply path 51 or the water supply path 52, and the hot water supply solenoid valve 61a or the water supply solenoid valve 6
Affects 1b. Especially, the hot water supply solenoid valve 61a and the water supply solenoid valve 6
If 1b is a pilot-type solenoid valve using a diaphragm, when the general hot water tap or general water tap is suddenly opened or closed, etc., the diaphragm of the valve will bounce and water will leak even though it is closed. There was a problem that the overflow chamber 65 was filled with water and leaked to the outside.

Therefore, the present invention solves the above-mentioned drawbacks of the conventional device, and even when a leakage occurs in the hot water supply solenoid valve or the like, the bath drop hot water supply rim cutoff valve device in which the leaked water overflows and does not leak outside. For the purpose of providing.

[0006]

In order to achieve the above object, a bath drop hot water supply rim valve device of the present invention is interposed between a hot water supply passage 51 from a water heater and a bath reheating circulation passage 30 , A hot water supply valve 91 for opening and closing the passage of the hot water supply passage 51 and an air charge chamber 93 downstream thereof via a first hot water supply check valve 92 are provided, and a second hot water check valve 95 is further provided from the air charge chamber 93. as dropped the hot water circulation path 30 for reheating the bath via an air charge chamber 93 to flow at the time of non-hot water supply with dropping water from the hot water supply passage 51 at the time of hot water in the circulation path 30 for reheating the bath
A rim cutoff valve device 90 for bath drop hot water supply, which is configured to cut off the rim in the air charge chamber 93 ,
Air charge port 93a provided on the ceiling of the chamber 93
First air charge valve 96 that opens and closes from the outside
In addition to a, it said by disposed air charge chamber 93 is water the air charge chamber 93 is filled Eacha
Air charge port 93 provided on the ceiling of the room 93
A feature is that a second air charge valve 96b for closing a is provided.

[0007]

According to the features of the present invention, the hot water supply valve is closed while the hot water supply to the bath is stopped, and the first air charge valve of the air charge chamber is opened to cut off the water flow. . The second air charge valve is also open because there is no water in the air charge chamber. When the general hot-water tap is suddenly closed or opened during such a stop of hot-water supply in the bath, and the closed state of the hot-water supply valve is momentarily broken, the water flows from the hot-water supply valve to the first hot-water check valve. It flows through to the air charge chamber, fills the air charge chamber, and tries to leak out from the air charge port to the outside. At this time, the first air charge valve is still in the open state, while the second air charge valve causes water to enter the air charge chamber to fill the inside of the air charge chamber, and It is pushed by and closes the air charge port. Therefore, when water fills the air charge chamber, the air charge port is also closed by the second air charge valve. Therefore, the water does not leak to the outside from the air charge port, and further flows from the air charge chamber to the bath reheating circulation path side through the second hot water supply check valve. The higher the water pressure in the air charge chamber, the higher the closing force of the air charge port by the second air charge valve.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, and FIGS. 2 and 3 are sectional views showing the main part of an edge-cutting valve device which is an embodiment of the present invention. FIG. 2 is a state when hot water is not supplied. FIG. 3 shows the state during hot water supply. FIG. 4 is a cross-sectional view showing details of a main part of the edging valve device.

In FIG. 1, a bath reheating circuit 30 including a bath return pipe 31 and a bath outflow pipe 32 is circulated from a bathtub 20 to a bath reheating heat exchange can body 10. Bath return pipe
31 has a circulation pump 41, a water flow switch 42, a bath temperature sensor
43, a bath water level sensor 44 is provided. Further, a hot water supply path 51 for automatic hot water supply from a hot water supply device (not shown) is connected to the edge valve device 90. The water supply can be connected to the gate valve device 90 as needed.

Referring also to FIGS. 2 and 3, the edge cutoff valve device 90 is provided with a hot water supply solenoid valve 91 for opening and closing the passage of the hot water supply passage 51, and a spring biased first hot water supply check valve is provided downstream thereof. A valve 92 is provided, and an air charge chamber 93 that extends laterally is provided downstream of the first hot water check valve 92. Further, a reinforced check valve 94 having a spring biasing force enhanced by a spring 94a is provided at the downstream of the air charge chamber 93 and at the outlet from the air charge chamber 93. A second hot water supply check valve 95 is further provided downstream of the reinforced check valve 94. An air charge port 93a is provided on the ceiling of the air charge chamber 93, and the air charge port 93a is provided.
The first spring 93a is biased from the outside in the opening direction.
The air charge valve 96a and the air charge chamber 93 are arranged so that when water enters the air charge chamber 93, it is pushed by the water pressure to close the air charge port 93a.
An air charge valve 96b is installed. The air charge port 93a is a port for introducing air, and is connected to an overflow port 97 for overflowing water that has overflowed from the air charge chamber 93. The reinforced check valve 94 and the first air charge valve 96a are the DC geared motor 98a.
It is forcibly moved by the valve forcibly moving means 98 composed of the cam 98b and the pressing rod 98c. That is, the first air charge valve 96a is forcibly moved by the valve forced moving means 98 so as to close the air charge port 93a during hot water supply. Further, the reinforced check valve 94 is forcibly moved by the valve forced moving means 98 so as to open the passage when hot water is supplied. Reinforced check valve 94
Is a valve for preventing the air in the air charge chamber 93 from easily entering the bath-heating circuit 30 side even when the bath-heating circuit 30 side has a negative pressure.

Details of the edging valve device 90 will be described with reference to FIG. In FIG. 4, the hot water supply solenoid valve 91 closes the hot water supply passage 51 when the diaphragm 91a of the valve body is seated on the valve seat 91b. In the figure, the left side of the center line X ₁ shows the closed state when the hot water supply is stopped, and the right side shows the open state when the hot water supply is performed. The second air charge valve 96 arranged in the air charge chamber 93
b is the valve guide so that it faces the air charge port 93a provided on the ceiling of the air charge chamber 93 from the inside.
It is held so that it can advance freely into 100 holes, and the flange portion 96c of the second air charge valve 96b is pushed upward by the water pressure of the water that has entered the air charge chamber 93, and the air charge port 93a is pushed up. Close from the inside. The higher the water pressure, the higher the closing force of the second air charge valve 96b. In the figure, the left side of the center line X ₂ shows the closed state of the air charge valves 96a and 96b during hot water supply, and the right side shows the open state when hot water supply is stopped. When hot water supply is stopped, the first air charge valve 96a is opened by a spring. The second air charge valve 96b retracts into the valve guide 100 by its own weight and opens the air charge port 93a.

When a bath hot water supply is instructed by a remote controller or the like (not shown), the controller 80, referring to FIG.
The hot water supply solenoid valve 91 is opened, and the valve forced moving means 98 is used to close the first air charge valve 96a and open the reinforced check valve 94. Hot water from the hot water supply passage 51 is supplied by the hot water solenoid valve.
91, passing through the first hot water check valve 92 into the air charge chamber 93, the second air charge valve 96b is also moved by the water pressure in the closing direction of the air charge port 93a, and is further opened without overflow. After passing through the check valve 94 and the second hot water supply check valve 95, it flows into the bath reheating circulation path 30 and is introduced into the bathtub. Next, when the bath hot water supply of a predetermined amount is completed, with reference to FIG.
And the valve forced moving means 98 to release the forced closing of the first air charge valve 96a, and the reinforced check valve 94.
The forced release of is released. As a result, the first air charge valve 96a opens the air charge port 93a by the spring biasing force, and the second air charge valve 96b also opens the air charge port 93a because the amount of water is lost. The reinforced check valve 94 also strongly closes the passage by the spring. This state is maintained when hot water is not supplied. When hot water is not supplied to the bathtub, the air charge port 93a is opened, but the reinforced check valve 94 closes the passage strongly, so even if the bath reheating circulation path 30 side becomes negative pressure, the air will not flow. Invasion of the bath reheating circuit 30 side is prevented. Since the reinforced check valve 94 is opened by the valve forced moving means 98, there is no problem in opening the valve. In addition, the condition in which the bath reheating circulation path 30 side is likely to be in a negative pressure condition is that the bathtub has an edge valve device.
This is the case when it is placed at a position considerably lower than 90.

On the other hand, when the hot water supply to the bathtub is not performed, the hot water supply solenoid valve 91 is kept closed and the first air charge valve 96a opens the air charge port 93a by means of a spring. Second air charge valve
96b also retreats downward due to its own weight and air charge port 93a
Is open. In this state, when the hot water supply tap of the general hot water supply passage (not shown) having a common passage with the hot water supply passage 51 is suddenly closed or opened, the diaphragm 91a of the hot water supply solenoid valve 91 bounces and the passage is instantaneously opened. Or open it. In this case, water flows in and the air charge chamber
Although it tries to flow out to the outside through the air charge port 93a, the second air charge valve 96b is provided, so that the second air charge valve 96b enters the air charge chamber 93. Valve guide under the pressure of clear water
Advance from 100 and close the air charge port 93a. Therefore, water is prevented from flowing out from the air charge port 93a. Water flows to the bath reheating circuit 30 side,
When the water in the air charge chamber 93 is drained, the second air charge valve 96b reopens the air charge port 93a.

[0014]

According to the present invention, which has the above-described configuration and operation, the bath drop hot water supply rim valve device according to claim 1 is outside the air charge port provided in the ceiling of the air charge chamber. In addition to the first air charge valve that opens and closes from, the second air charge valve that is placed in the air charge chamber and closes the air charge port when the air charge chamber is filled with water is provided. Even when water is leaking from the hot water supply valve of the rim cutoff valve device and flows into the rim cutoff valve device due to pressure fluctuations caused by sudden opening and closing of other general hot water taps etc. while the hot water supply operation is stopped, It is possible to prevent leaked water from flowing out of the air charge chamber.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a main part of an edge valve device which is an embodiment of the present invention, showing a state when hot water is not supplied.

FIG. 3 is a cross-sectional view showing a main part of an edge valve device which is an embodiment of the present invention, showing a state during hot water supply.

FIG. 4 is a cross-sectional view showing details of a main part of the edging valve device.

FIG. 5 is a configuration diagram showing a conventional device.

[Explanation of symbols]

 10 Heat-exchange can for bath reheating 20 Bath 30 Circulation for bath reheating 51 Hot water supply channel 90 Edge shutoff valve device 91 Hot water supply solenoid valve 92 First hot water check valve 93 Air charge chamber 93a Air charge port 94 Reinforced check valve 96a First air charge valve 96b Second air charge valve 98 Valve forced moving means

Claims (1)

(57) [Claims] 1. A hot water supply valve 91 which is interposed between a hot water supply passage 51 from a water heater and a bath reheating circulation passage 30 to open and close the passage of the hot water supply passage 51 , and a first hot water supply check valve 92 downstream thereof. Through the air charge chamber 93 , and hot water is dropped from the air charge chamber 93 through the second hot water supply check valve 95 into the bath reheating circulation path 30. A bath drop hot water supply rimming valve device 90 in which water from 51 is dropped into the bath reheating circulation path 30 and the water flow is cut off in the air charge chamber 93 when hot water is not supplied to the air charge chamber 93 . In addition to the first air charge valve 96a that opens and closes from the outside with respect to the air charge port 93a provided in the ceiling portion of the chamber 93 , the air charge chamber 93 is provided in the air charge chamber 93 . Characterized in that a second air charge valve 96b to close the error <br/> Ah charge port 93a provided in the ceiling portion of the front Symbol air charge chamber 93 by the Yaji chamber 93 filled water Edge shutoff valve device for hot water supply in the bath.