JPH07158971A - Break-off valve device for bath supplying hot water - Google Patents

Abstract

PURPOSE:To prevent invasion of the air to a circulating passage side of bath temperature keeping function and invasion of hot water from the circulating passage side of the bath temperature keeping function by providing valve forcibly moving means for closing a first air charge valve and opening a forcible check valve only at the time of supplying hot water. CONSTITUTION:At the time of supplying hot water to a bath, a controller 80 opens a hot water supply solenoid valve 91, valve forcibly moving means 98 closes a first air charge valve 96a, and opens a forcible check valve 94. Warm water from a hot water supply passage 51 is fed to a circulating passage 30 with bath temperature keeping function to be introduced to a bathtub 20. When hot water supply is finished, the controller 80 closes the valve 91, and the means 98 releases closing of the valve 96a, and releases the opening of the valve 94. Thus, the valve 96a is opened, and the valve 94 strongly closes the passage by a spring 94a. As a result, invasion of the air to the passage 30 side is prevented.

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 path from a water heater and a bath heating circulation path to drop water from the hot water supply path into the bath heating circulation path and to not supply hot water. At times, it relates to a bath drop hot water supply edging valve device for cutting off the water on the hot water supply passage side and the water on the bath reheating circulation path side.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional rim cut-off valve device for bath drop hot water supply of this type. This device will be described. Reference numeral 10 is a heat reheating can body for bath reheating, and a bath reheating circulation path 30 including a bath return pipe 31 from the bathtub and a bath going pipe 32 is connected to the can body 10. The bath water enters the bath-exchanging heat exchange can body 10 from the bath return pipe 31 by the drive of the circulation pump 41, is heated, and is circulated to the bathtub through the bath outflow pipe 32. 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 needed are provided, and these are connected via a rim cut valve device 60 to a bath reheating circulation path 30.
Connected to. The edge cutoff valve device 60 includes a hot water supply valve including a hot water supply solenoid valve 61a that opens and closes the passage of the hot water supply passage 51 and a water supply solenoid valve 61b that opens and closes the passage of the water supply passage 52, and a first check valve 62 provided downstream thereof. A second check valve 63 and a drop-in hot water supply passage 64 are provided downstream of the first check valve 62, and the first check valve 62 is pushed down to close the upper opening. Overflow chamber 65 is provided and overflow chamber
An overflow solenoid valve 66 and a drainage solenoid valve 67 are provided at 65. 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.

To supply hot water to the bathtub, a solenoid valve 61 for hot water supply is supplied via the controller 80 in response to a command from a remote controller (not shown) or the like.
a. The water supply solenoid valve 61b is opened as necessary, and the three-way switching valve 70 is dropped to connect the hot water supply passage 64 and the bath return pipe 31 so that hot water from the hot water supply passage 51 and the water supply passage 52 is supplied to the hot water supply valve 61a.
, 61b, the first check valve 62, the second check valve 63, the drop 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 passage 31a for both transportations and a check valve 31b provided in the bypass passage 31a. A part of the hot water introduced into the bath return pipe 31 by this bypass passage 31a and the check valve 31b can be introduced directly into the bathtub from the bath return pipe 31 through the bypass passage 31a, and a smooth bath with both transports can be performed. Hot water is supplied. The overflow solenoid valve 66 is opened when hot water supply is stopped, and by supplying air from the overflow chamber 65 to the first check valve 62 side, continuous water flow is cut off and edging is performed.
In addition, the drainage electromagnetic valve 67 leaks water when hot water is supplied into the overflow chamber 65, and drops from the bath reheating circulation path 30 side to flow back through the hot water supply path 64 and the second check valve 63. This is a valve for draining the water that has entered the overflow chamber 65.

[0004]

However, in the above-mentioned device, for example, when the bath is installed at a place considerably lower than the edging valve device 60, the edging valve device is used.
Air from the 60 side is circulated 30 for bath reheating due to negative pressure
Circulation pump with air entrapment
Since the noise of 41 is likely to occur and the bath water level sensor 44 detects the bath water level inaccurately, the three-way switching valve 70 was necessary. Similarly, when the bath is placed in a high place, three-way switching is performed to prevent hot water from entering from the bathtub side to the edge valve device 60 side due to the positive pressure generated during the bath reheating circulation. Valve 70 was needed. Further, when the three-way switching valve 70 is provided, the bypass passage 31a and the check valve 31b are further required in order to carry out both the efficient transport when hot water is supplied to the bathtub. Thus, in the conventional device, the three-way switching valve 70 and the bypass passage 31
Since it requires a and a check valve 31b, it has the drawback of being expensive. Further, in the above-mentioned conventional device, drainage of the overflow chamber 65 is required, which has a drawback that it takes time.

Therefore, the present invention solves the above-mentioned drawbacks of the conventional device, and the three-way switching valve 70 and the bypass passage 31 for both transportations.
It does not require a or check valve 31b, is low cost, and air is mixed into the bath reheating circulation path 30 from the hot water supply passage side,
An object of the present invention is to provide a bath drop hot water supply rim valve device capable of reliably preventing hot water from the bath reheating circulation path 30 side from entering the hot water supply path side.

[0006]

In order to achieve the above object, a bath drop hot water supply rim valve device of the present invention is provided between a hot water supply passage from a water heater and a bath reheating circulation passage, A bath drop hot water supply rim valve device that drops water from a hot water supply passage into the bath reheating circulation path and separates the water on the hot water supply passage side from the water on the bath reheating circulation path side when not hot water supply A hot water supply valve that sometimes opens the passage of the hot water supply passage, a first hot water supply check valve that is on the downstream side of the hot water supply valve and prevents backflow of hot water, and a downstream of the first hot water supply check valve. A first air charge valve for introducing air into the hot water supply passage when hot water is not supplied, a reinforced check valve downstream of the air charge valve and provided with a strong spring biasing force, and the first air charge valve only when hot water is supplied. Forcibly close the air charge valve and It is characterized in that a valve forcible moving means for forcibly opening the reinforcing return valve.

[0007]

According to the above feature of the present invention, when hot water is supplied to the bathtub, the hot water supply valve is opened, the air charge valve is forcibly closed and the reinforced check valve is forcibly opened by the valve forced moving means. As a result, hot water flows into the bath reheating circulation path through the hot water supply valve, the first hot water supply check valve, and the reinforced check valve, and is introduced into the bathtub. When the hot water supply is finished, the hot water supply valve is closed, the forced closing of the air charge valve by the valve forced moving means is released, and the forced opening of the reinforced check valve is released. As a result, the air charge valve is opened and the reinforced check valve closes the passage by the strong spring biasing force. When the air charge valve is opened, air is introduced to cut off the water flow. Even when a negative pressure is applied to the bath drop hot water supply rim cutoff valve device side from the bath reheating circulation side by arranging the position of the bathtub at a position considerably lower than the bath drop hot water supply rim cutoff valve device, Since the reinforced check valve closes the passage by a strong spring biasing force, air is not sucked from the bath dropping hot water supply edge cutoff valve device side to the bath reheating circulation passage side. Of course, even when a positive pressure is applied from the bath reheating circulation side to the bath dropping hot water supply rim valve device side, the reinforced check valve does not open, so that bath water does not enter. Therefore, there is no need for a three-way switching valve in the connection from the bath drop hot water supply rim cutoff valve device side to the bath reheating circulation path side, and therefore neither a bypass passage for both transports nor a check valve provided in the bypass passage is required. Therefore, the cost can be reduced. Moreover, since air does not enter from the bath drop hot water supply edge valve device side to the bath reheating circulation path side, noise due to air inclusion and inaccurate bath water level detection do not occur.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall constitutional view showing an embodiment of the present invention, and FIGS. 2 and 3 are sectional views showing the essential parts of an embodiment of the present invention.
Shows the state when hot water is not supplied, and FIG. 3 shows the state when hot water is supplied.

In FIG. 1, a bath reheating circulation path 30 composed of a bath return pipe 31 and a bath outflow pipe 32 circulates from the bathtub 20 to the bath reheating heat exchange can body 10. Bath return pipe
31 is a circulation pump 41, a water flow switch 42, a bath temperature sensor
43 and a bath water level sensor 44 are 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. If necessary, the water supply channel can be connected to the edging valve device 90.

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, downstream of the air charge chamber 93, a reinforced check valve 94 which is spring-biased by a strong spring 94a is provided at a drop port from the air charge chamber 93. A second hot water check valve downstream of the reinforced check valve 94
95 is provided. The air charge port 93a provided in the ceiling portion of the air charge chamber 93 is provided with a first air charge valve 96a which is spring-biased in an opening direction from above, and the air charge chamber 93 is filled with water from inside the air charge chamber 93. A second air charge valve 96b is provided which closes the air charge port 93a when filled. The air charge port
93a is an inlet for introducing air and an air charge chamber
It is also a mouth for overflowing water overflowing from 93 and continues to the overflow mouth 97. The reinforced check valve 94 and the first air charge valve 96a are the DC geared motor 98a and the cam 9a.
Valve forced moving means 98 composed of 8b and pressing rod 98c
Is forced to move. 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. In particular, since the reinforced check valve 94 is biased in the passage closing direction by the strong spring 94a, the passage cannot be easily opened without the forced valve moving means 98.

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, the first hot water supply check valve 92 to enter the air charge chamber 93, and the second air charge valve 96b also has an air charge port.
93a It is moved in the closing direction, flows through the strengthening check valve 94 and the second hot water supply check valve 95 that are further opened without overflowing, 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. 2, the controller 80 closes the hot water supply solenoid valve 91, and also performs the valve forced moving means 98 to forcibly close the first air charge valve 96a. And the forced opening of the reinforced check valve 94 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 disappears. And the reinforced check valve 94
Strongly closes the passage with its strong spring 94a.
This state is maintained when hot water is not supplied.

When the hot water is not supplied, the air charge port 93a is opened, but the reinforced check valve 94 strongly closes the passage.
Even if the bath reheating circulation path 30 side has a negative pressure, air is prevented from entering the bath reheating circulation path 30 side. 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, bath recirculation circuit 30
The condition in which the side is likely to be negative pressure is when the bathtub is arranged at a position considerably lower than the edging valve device 90.

[0013]

According to the present invention having the above-mentioned structure and operation, the bath drop hot water supply edge cutoff valve device according to claim 1 has a hot water supply valve for opening the passage of the hot water supply passage during hot water supply, and the hot water supply valve of the hot water supply valve. A first hot water supply check valve that is on the downstream side and prevents the reverse flow of hot water, and a first air charge valve that is downstream of the first hot water supply check valve and that introduces air into the hot water supply passage when the hot water is not supplied. And a reinforced check valve downstream of the air charge valve and provided with a strong spring biasing force, and the first air charge valve is forcibly closed and the reinforced check valve is forcibly opened only during hot water supply. Since the valve forced moving means is provided, there is no need for a three-way switching valve at the connection position with the bath reheating circuit or a costly facility for both delivery, and reliable water flow when hot water is not supplied. Circulation side for bath reheating while performing edge cutting Intrusion and air, hot water from entering from the bath reheating circulation roadside can be prevented.

[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 the device for carrying out the present invention, showing a state when hot water is not supplied.

FIG. 3 is a cross-sectional view showing a main part of the device according to the present invention, showing a state during hot water supply.

FIG. 4 is a configuration diagram showing a conventional device.

[Explanation of symbols]

 10 Heat exchange canister for bath reheating 20 Bath 30 Bath reheating circuit 51 Hot water supply channel 90 Edge shutoff valve device 91 Hot water supply solenoid valve 92 First hot water check valve 94 Enhanced check valve 94a Spring 96a First air charge Valve 98 Valve Forced movement means

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Katsuhiro Hitaka 32 Akashi-cho, Chuo-ku, Kobe-shi, Hyogo In stock company Noritsu

Claims (1)

[Claims] 1. The water from the hot water supply passage is dropped between the hot water supply passage from the water heater and the bath reheating circulation passage to drop into the bath reheating circulation passage, and at the time of non-water supply A bath drop hot water supply edging valve device for edging water and water on the side of the bath reheating circulation path side,
There is a hot water supply valve that opens the passage of the hot water supply path during hot water supply, a first hot water supply check valve that is on the downstream side of the hot water supply valve and that prevents the reverse flow of hot water supply, and a downstream of the first hot water supply check valve. A first air charge valve for introducing air into the hot water supply passage when the hot water is not supplied, a reinforced check valve downstream of the air charge valve and provided with a strong spring bias, and the first air charge valve only when the hot water is supplied. An air sluice valve device for bath drop hot water supply, comprising: a valve forced moving means for forcibly closing the air charge valve and forcibly opening the reinforced check valve.