JP2555863B2 - 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 channel from a hot water supply device and a bath additional heating circuit, and drops water from the hot water supply channel into the bath additional heating circuit and non-hot water supply. The present invention relates to a bath dropping hot water supply cutoff valve device that sometimes separates the water on the hot water supply path side and the water on the bath additional heating circulation path side.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional rim cut-off valve device for hot water supply of 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, 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
It is easy to enter the side, and therefore the circulation pump by 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 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 are
It requires 31a and a check valve 31b, and has a drawback that the cost is high. 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 heating circuit 30 from the hot water supply passage 51 side, or hot water from the bath heating circuit 30 side is supplied from the hot water supply passage 51 side. It is an object of the present invention to provide a bath drop hot water supply rim cutoff valve device capable of surely preventing it from entering the 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 to supply hot water. A bath drop hot water supply edging valve device that sometimes drops water from the 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 during non-hot water supply. , A hot water supply valve that opens the passage of the hot water supply passage at the time of hot water supply, a first hot water supply check valve that is on the downstream side of the hot water supply valve and prevents reverse flow of hot water supply, and a downstream of the first hot water supply check valve An overflow chamber provided, a first air charge valve that opens and closes an air charge port of the overflow chamber, a vacuum breaker provided in a hot water supply passage before the hot water supply valve, and a height position of a bathtub.
And a water level sensor for detecting
The position of the bathtub detected by the position sensor is
Is too low, the first air charge valve is always
ー When the charge port is closed and the bathtub position is cut off
If it is higher than the valve device, supply the first air charge valve.
A control that closes forcibly when hot water is used and opens when hot water is stopped
The first feature is that a roller is provided . Further, the bath drop hot water supply edge valve device of the present invention is interposed between the hot water supply passage from the water heater and the bath heating circulation passage, and the water from the hot water supply passage is supplied with water from the hot water supply passage at the time of hot water supply. A bath drop hot water supply rim valve device that cuts off the water on the hot water supply path side and the water on the bath reheating circulation path side when not hot water is supplied to the hot water supply valve for opening the passage of the hot water supply path during hot water supply, A first hot water supply check valve which is located downstream of the hot water supply valve and prevents a reverse flow of the hot water supply;
An overflow chamber provided downstream of the hot water check valve of
A reinforced check valve downstream of the overflow chamber and provided with a strong spring biasing force, a first air charge valve for opening and closing the air charge port of the overflow chamber, the reinforced check valve and the first air The valve forced moving means for forcibly operating the charge valve, the vacuum breaker provided in the hot water supply passage before the hot water supply valve, and the height position of the bath are detected.
A water level sensor that outputs water and a coil that controls the valve forced moving means.
Controller and at least the controller
The control configuration of the valve forced moving means by
Fixed position of the detected tub than the edge cutting valve device distance
If it is lower than the above, the valve forced moving means is used to strengthen the valve.
The check valve is forcibly maintained in the open state forcibly against the spring bias.
Hold it and keep the first air charge valve
-With a control configuration that keeps the charge port closed,
When the bath position is lower than the edge valve device by a certain distance
Except for the above, the valve forced moving means is used and
If the chemical check valve is kept open against the spring bias.
Both resist the first air charge valve against the spring biasing force.
Forced maintenance of closed state and strengthening when hot water is not supplied
Release the forced state of the check valve and the first air charge valve
The second characteristic is that the control configuration is adopted.

[0007]

According to the first feature of the present invention, when the position of the bathtub is lower than that of the edge valve device, the first air charge valve is always closed. Even if a negative pressure is applied to the rimming valve device side from the bath reheating circulation side because the bathtub is located at a lower position than the riming valve device, air cannot enter from the outside to the overflow chamber. Air is prevented from entering the bath reheating circuit side. Further, when the position of the bathtub is higher than that of the edge valve device, the first air charge valve is forcibly closed during hot water supply and opened during non-water supply.
During hot water supply, hot water for hot water supply does not flow out of the overflow chamber through the air charge port. Further, when the hot water supply is stopped, the first air charge valve is opened, so when the bathtub is at a high position and a positive pressure is applied from the bath-fired circulation path side, the bathtub water enters the rimming valve device. Even if it enters, it is discharged from the overflow chamber to the outside through the air charge port, and further entry into the hot water supply passage is prevented. From the above, a three-way switching valve is not required for the connection from the bath drop hot water supply edge valve device side to the bath reheating circulation path side, and thus a bypass passage for both transportations and a check valve provided in the bypass passage are also required. Therefore, the cost can be reduced. Moreover, since the invasion of air from the bath drop-in hot water supply rim valve device side to the bath reheating circulation path side is prevented, the occurrence of noise in the circulation pump for the bath reheating circulation path, etc. is prevented,
Further, inaccuracies in water level detection by a water level sensor or the like are prevented.

According to the above second feature, when the position of the bathtub connected to the bath reheating circulation path is lower than the edge valve device by a certain distance or more, the first air charge valve is operated by the valve forced moving means. Since the closed state is forcibly maintained constantly against the spring biasing force, a negative pressure is applied to the rimming valve device side from the bath reheating circuit side when the bathtub is lower than the riming valve device by a certain amount or more. In this case, air cannot enter from the outside into the overflow chamber closed by the first air charge valve, so that air can be prevented from entering from the overflow chamber to the bath reheating circulation path side. . In addition, except when the position of the bathtub is lower than the edge shutoff valve device by a certain distance or more, that is, (1) when the position of the bathtub is above the edge shutoff valve device, and (2) when the position of the bathtub is below the edge shutoff valve device. However, when the difference is small and the distance is less than the predetermined distance, the reinforced check valve is maintained in the open state against the spring biasing force by the valve forced moving means only during hot water supply, and the first air charge valve is also provided. Is configured to forcibly maintain the closed state against the spring biasing force and to release the forced check valve and the first air charge valve by the valve forced moving means when the hot water is not supplied. In the case of 1), since the bathtub is located at a high position, even when a positive pressure is applied from the side of the bath-heating circuit when the hot water is not supplied, the bathwater that tries to enter the edge valve device is strong. Passage by spring Ensure penetration is prevented by the reinforcing check valve being closed. Further, in the case of (2), since the bathtub is located at a position lower than the edge cutoff valve device, a negative pressure may be applied from the bath reheating circulation path side when the first air charge valve is in the open state and the hot water is not supplied. However, the reinforced check valve that closes the passage with a strong spring surely prevents air from entering the bath reheating circulation passage side from the rim cut valve device side. Of course, during the hot water supply, the reinforced check valve is forcibly opened and the first air charge valve is forcibly closed, so the hot water does not flow out of the overflow chamber to the outside, and is reliably dropped to the bath reheating circulation side. Get caught. The second feature is the vacuum breaker unless it is a standard set by the Japan Water Association, that is, when the bathtub is lower than the edge valve device by a certain distance (more precisely, the overflow surface of the bathtub is 300 mm or more than the vacuum breaker). This is a configuration to meet the standard that specifications cannot be specified using. According to the second feature, the first
As in the case of the above feature, the connection from the bath drop hot water supply rim cutoff valve device side to the bath reheating circulation path side does not require a three-way switching valve, and therefore the bypass path for both transportations and the reverse path provided in the bypass path are provided. No stop valve is required, and the cost can be reduced. Moreover, since the inflow of air from the bath drop-in hot water supply rim valve device side to the bath reheating circulation path side is prevented, noise is prevented from being generated in the circulation pump for bath reheating circulation circuit, etc. Inaccuracies in water level detection are prevented.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, and FIGS. 2A and 2B are views for explaining the positional relationship between an edge valve device and a bath. FIG. 3 is a cross-sectional configuration diagram of the edging valve device showing a state when hot water is not supplied when the overflow surface of the bathtub is 300 mm or more below the vacuum breaker.
Is a cross-sectional configuration diagram of the edging valve device showing the state when hot water is not supplied when the overflow surface of the bathtub is less than 300 mm below the vacuum breaker and above the vacuum breaker. Figure 5 shows the bathtub with respect to the vacuum breaker. FIG. 4 is a cross-sectional configuration diagram of the edge valve device during hot water supply regardless of which position it is.

In FIG. 1, a bath reheating circulation passage 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 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 to FIG. 3, FIG. 4, and FIG. 5 in addition to FIG. 1,
The edge cutoff valve device 90 is provided with a hot water supply solenoid valve 91 that opens and closes the passage of the hot water supply passage 51, and a spring-biased first hot water supply check valve 92 is provided downstream thereof. An overflow chamber 93 that extends laterally is provided downstream of the valve 92. A reinforced check valve that is spring-biased by a strong spring 94a at the outlet from the overflow chamber 93 downstream of the overflow chamber 93.
94 are provided. A second hot water supply check valve 95 is further provided downstream of the reinforced check valve 94. The air charge port 93a provided in the ceiling of the overflow chamber 93 is filled with water from the first air charge valve 96a that is spring-biased from above to the overflow chamber 93. A second air charge valve 96b for closing the air charge port 93a is provided. The air charge port 93a is a port for introducing air and is also an overflow 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. Further, the edging valve device 90
A vacuum breaker 99 is provided in the hot water supply passage 51 in front of the hot water supply solenoid valve 91. The edge cutoff valve device 90, the circulation pump 41, and the like are subjected to predetermined control by the controller 80 based on input of signals from respective sensors and the like, a remote controller (not shown), and the like.

In the present invention, the specifications of the reinforced check valve 94 and the first air charge valve 96a of the edging valve device 90 are different depending on the installation height relationship between the bath 20 and the edging valve device 90. That is, with reference to FIGS. 2A and 2B, an embodiment corresponding to the second feature of the present invention will be described first. As shown in FIG. 2A, the bathtub 20 is an edge valve device 90.
When the position of the overflow surface 21 of the bathtub 20 is lower than the position of the vacuum breaker 99 of the edging valve device 90 by a certain distance or more, the position of the overflow surface 21 of the bathtub 20 is more than a certain distance, in this case, as shown in FIG. As shown, the reinforced check valve 94 is a valve forced moving means 98 (DC geared motor 98a, cam 98b, pressing rod).
98c) forcibly maintains the open state against the spring biasing force, and the first air charge valve 96a always forces the valve biasing means 98 against the spring biasing force. Try to keep the air charge port 93a closed. Therefore, in this case, the edge of the water flow between the water on the hot water supply passage 51 side and the water on the bath reheating circulation passage 30 side is
It will be done by the vacuum breaker 99.

When the bathtub 20 is at a position lower than the position of the edging valve device 90 by a certain distance or more, the overflow surface of the bathtub 20 is accurate.
When the position of 21 is lower than the position of the vacuum breaker 99 of the edge valve device 90 by a certain amount or more, the edge valve device 90 is in the state of FIG. 3 during non-hot water supply, and the edge of the water flow is cut by the vacuum breaker 99 as described above. . In addition, with respect to the negative pressure from the bath reheating circulation path 30 side that is generated when the bathtub 20 is lower than the edge valve device 90,
Since the air charge valve 96a is closed, air does not enter the overflow chamber 93, which prevents air from entering the bath reheating circulation path 30 side. Therefore, noise generation of the circulation pump 41 due to air entrapment is prevented, and inaccurate detection of the water level of the bath water level sensor 44 due to air entrapment is prevented. The bath water level sensor 44 consists of a pressure sensor, and the bath reheating circuit 30
Accurate detection of the water level is not possible due to the entrainment of air in the. At the time of hot water supply, referring to FIG. 5, controller 80 opens hot water supply solenoid valve 91 to start hot water supply. Hot water enters the overflow chamber 93 from the hot water solenoid valve 91 through the first hot water check valve 92, and further passes through the strengthening check valve 94 and the second hot water check valve 95 to the bath reheating circulation path 30. Inflow.
At this time, when the water is introduced into the overflow chamber 93, the second air charge valve 96b is moved upward to close the air charge port 93a, but in any case, the air charge port 93a is closed by the first air charge port 93a. Since it is closed by the charge valve 96a, the water introduced into the overflow chamber 93 does not flow out through the air charge port 93a. When the hot water supply is stopped, the hot water supply solenoid valve 91 is closed via the controller 80 and the hot water supply is stopped. When the edge cutoff valve device 90 side and the hot water supply passage 51 side have a negative pressure tendency, the vacuum breaker 99 operates, air is introduced, and the water flow is cut off.

Next, referring to FIG. 2B, except when the position of the bathtub is lower than the edge valve device by a certain distance or more, that is, (1) when the position of the bathtub is above the edge valve device and (2) When the position of the bathtub is below the edge valve device, but the difference is small and the distance is less than the predetermined distance, at the time of hot water supply, as shown in FIG. The valve 94 is forcibly maintained in the open state against the spring biasing force, and the first air charge valve is also provided.
96a is forcibly maintained in the closed state against the spring bias,
Moreover, when hot water is not supplied, as shown in FIG.
The forced check valve 94 and the first air charge valve 96a released by 98 are released. When the forced state is released, the reinforced check valve 94 closes the passage by its strong spring 94a, and the first air charge valve 96a opens the air charge port 93a by the spring. Now, when a bath hot water supply is commanded by a remote controller not shown, referring to FIG.
The controller 80 opens the hot water supply solenoid valve 91 and also uses the valve forced movement means 98 to close the first air charge valve 96a and open the reinforced check valve 94. Hot water from the hot water supply passage 51 enters the overflow chamber 93 through the hot water supply solenoid valve 91 and the first hot water supply check valve 92, and the second air charge valve 96b also moves in the closing direction of the air charge port 93a and overflows. Without passing through the reinforced check valve 94 and the second hot water supply check valve 95 that are further opened, they flow into the bath reheating circulation path 30 and are introduced into the bath 20. Next, when the bath hot water supply for a predetermined amount is completed, referring to FIG.
91 is closed and the valve forced moving means 98 is used to release the forced closing of the first air charge valve 96a and the reinforced check valve 9
Release the forced release of 4. 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 closes the passage strongly by its strong spring 94a. This state is maintained when hot water is not supplied,
Since the air charge valves 96a and 96b are opened, air is introduced into the overflow chamber 93 and the water flow is cut off. When the hot water is not supplied, the air charge port 93a is opened, but the reinforced check valve 94 closes the passage strongly, so that the bathtub 20 is placed at a position lower than the edge cutoff valve device 90, so that the bath reheating circuit is closed. Even if a negative pressure is generated on the side of 30, the air is prevented from entering the side of the bath reheating circulation path 30 from the side of the overflow chamber 93. On the other hand, by placing the bathtub 20 at a position higher than the edge valve device 90, even if positive pressure is generated on the bath reheating circuit 30 side, the bath water from the bath reheating circuit 30 side is strengthened. It is surely shut off by the check valve 94.

In the above, the condition whether or not the bathtub 20 is at a position lower than the position of the edging valve device 90 by a certain distance or more is based on the standard of the Japan Water Cooperation. 2 (A), except when the overflow surface 21 of the bathtub 20 is lower than the vacuum breaker 99 by 300 mm or more,
It is not possible to trim the water stream with the specifications using the vacuum breaker 99. Therefore, the overflow surface 21 of the bathtub 20 is
If it is lower than the vacuum breaker 99 in the range of less than 300 mm, the vacuum breaker 99 cannot be used,
It is necessary to introduce air from the outside by using the first air charge valve 96a of the edging valve device 90 to perform edging of the water flow, but at the same time prevent air from entering the bath reheating circulation path 30 side. To do this, a strengthened check valve 94 is required. In addition, even when the overflow surface 21 of the bathtub 20 is above the vacuum breaker 99, the bathtub water will flow into the bath reheating circuit 30.
A reinforced check valve 94 is required to prevent entry from the side.

When it is not necessary to comply with the above criteria by the Japan Water Association, it is sufficient if the position of the bath 20 is above or below the vacuum breaker 99 of the edging valve device 90. That is, when the bathtub 20 is lower than the edge cutoff valve device 90 (vacuum breaker 99), the first air charge valve 96a is forcibly and constantly closed by the valve forced moving means 98 so that the vacuum breaker 99 cuts off the water flow. Should be done. Even if the bath reheating circulation path 30 side becomes negative pressure, the first air charge valve 96a is closed, so that the air enters the bath reheating circulation path 30 side even without the reinforced check valve 94. There is nothing to do. When the bathtub 20 is higher than the edge cutoff valve device 90 (vacuum breaker 99), the first air charge valve 96a may be closed during forced hot water supply and opened during non-hot water supply. When the hot water supply is completed, the first air charge valve 96a is opened, so that the air is introduced into the overflow chamber 93 and the water flow can be cut off. Even when bath water enters from the bath reheating circulation path 30 side during non-hot water supply, it can be overflowed from the overflow chamber 93 through the air charge port 93a to the hot water supply path 51 side. Intrusion can be prevented. Therefore, in this case, the reinforced check valve 94 is not always necessary. Therefore, when the vacuum breaker 99 specification is used depending on whether the bathtub 20 is above or below the edge valve device 90, the reinforced check valve is used.
94 can be omitted.

The position of the bathtub 20 with respect to the edge valve device 90 (more specifically, the vacuum breaker 99) can be detected by the bath water level sensor 43, which is a pressure sensor. The bathtub position detected by the controller 80 is input to the controller 80, and in the controller 80, for example, it is determined whether or not the overflow surface 21 of the bathtub 20 is lower than the above-mentioned 300 mm, and this determination automatically drives the valve forced moving means 98. Good. To explain a little more, with reference to FIG. 2 (A), for example, at the time of construction of installing a bathtub, when the circulation determination is first made, the bath water level sensor 44 causes the bath water level sensor 44 to make the circulation fittings 22 of the bathtub 20. Since it is possible to detect the position from the position, the positional relationship between the water level sensor 44 and the vacuum breaker 99, and the height from the circulation fitting 22 to the overflow surface 21 (shown as 400 mm in the figure)
By giving the controller 80 in advance, the bathtub can be easily
It is possible to determine whether the overflow surface 21 of 20 is 300 mm or less from the vacuum breaker 99. Therefore, based on this judgment, the valve forced moving means 98 is automatically driven, and the reinforced check valve 94 is
And the position of the first air charge valve 96a can be automatically controlled.

[0018]

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 such that the position of the bath detected by the water level sensor is the rim valve device.
If it is lower than the
ー When the charge port is closed and the bathtub position is cut off
If it is higher than the valve device, supply the first air charge valve.
A control that closes forcibly when hot water is used and opens when hot water is stopped
Since rollers are provided, it is possible to use the vacuum breaker properly, without the need for a three-way switching valve at the connection position with the bath reheating circuit or costly equipment for both transports , and to ensure reliable operation when hot water is not supplied. It is possible to prevent air from entering the bath-heating circuit side and hot water from the bath-heating circuit side while edging the water flow. According to the bath drop hot water supply rim cutoff valve device according to claim 2, the controller forces the valve.
A bathtub detected by a water level sensor as a control structure of the moving means
When the position of is lower than the edge valve device by a certain distance
Reinforced the check valve against the spring bias by using the valve forced moving means.
And forcibly maintain the open state at the same time as the first
Keep the air charge valve always closed
And the position of the bathtub is different from that of the edge valve device.
Except when it is lower than a certain distance,
The reinforced check valve against the spring bias only when hot water is supplied.
And maintain the open state and the first air char
The valve is forcibly maintained in the closed state against the spring bias.
In addition, when the hot water is not supplied, the reinforced check valve and the first air char
Since the control configuration that releases the forced state of the valve is used, the three-way switching valve and both transportations can be installed at the connection position with the bath reheating circulation circuit while properly satisfying the JSC standards and by properly using the vacuum breaker. It does not require costly equipment to ensure that the water flow is cut off when hot water is not supplied while air is entering the bath reheating circuit side and hot water is entering from the bath reheating circuit side. 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 diagram illustrating a positional relationship between an edge valve device and a bath.

[Figure 3] The overflow surface of the bathtub is 300 mm larger than the vacuum breaker.
FIG. 3 is a cross-sectional configuration diagram of the edging valve device showing a state when hot water is not supplied in the above case.

[Figure 4] Overflow surface of the bathtub is 300 mm larger than that of the vacuum breaker.
FIG. 3 is a cross-sectional configuration diagram of the edging valve device showing a state when hot water is not supplied when the temperature is below a lower level and when the temperature is above a vacuum breaker.

FIG. 5 is a cross-sectional configuration diagram of the rim gate valve device during hot water supply regardless of the position of the bathtub with respect to the vacuum breaker.

FIG. 6 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 80 Controller 90 Edge cut valve device 91 Hot water solenoid valve 92 First hot water check valve 93 Overflow chamber 93a Air charge port 94 Reinforced check Valve 96a First air charge valve 98 Valve forced moving means 99 Vacuum breaker

Claims (2)

(57) [Claims] 1. An intervening water supply path from a water heater and a bath reheating circulation path to drop water from the hot water supply path into the bath reheating circulation path when hot water is supplied and the hot water supply when the water is not supplied. A bath drop hot water supply rim cutoff valve device that separates the water on the road side from the water on the circulation road side for bath reheating, which is provided on the downstream side of the hot water supply valve for opening the passage of the hot water supply path during hot water supply. A first hot water supply check valve for preventing backflow of hot water, an overflow chamber provided downstream of the first hot water supply check valve, and a first air charge valve for opening and closing an air charge port of the overflow chamber. A vacuum breaker provided in the hot water supply passage before the hot water supply valve ,
At least a water level sensor that detects the height of the bath
And the position of the bathtub detected by the water level sensor is the edge.
If it is lower than the gate valve device, the first air char
The valve is always closed and the bathtub is closed.
If the position of is higher than the edge valve device, the first air
When the hot water is stopped, the charge valve is forcibly closed when the hot water is stopped.
A rim cutoff valve device for bath hot water supply, which is provided with a controller for opening . 2. An intervening water supply path from the water heater and a bath-fired circulation path to drop water from the hot-water supply path into the bath-fired circulation path when hot water is supplied and to the hot water supply when the water is not supplied. A bath drop hot water supply rim cutoff valve device that separates the water on the road side from the water on the circulation road side for bath reheating, which is provided on the downstream side of the hot water supply valve for opening the passage of the hot water supply path during hot water supply. a first hot water check valve to prevent backflow of hot water Te, and overflow chamber provided downstream of the hot water supply check valve of the first, attached a strong spring bias in the downstream of the overflow chamber A reinforced check valve, a first air charge valve for opening and closing an air charge port of the overflow chamber, a valve forced moving means for forcibly operating the reinforced check valve and the first air charge valve, Supply before the hot water supply valve A vacuum breaker provided in the hot water passage, a water level sensor for detecting the height position of the bathtub, and the valve
At least a controller that controls the forced movement means
And controlling the valve forced moving means by the controller
The structure is such that the position of the bathtub detected by the water level sensor is the edge.
If it is lower than the shutoff device by a certain distance,
By means of restraining movement, the reinforced check valve is resisted against the spring biasing force.
Forcibly maintain the open state at all times and
Keep the air charge valve always closed
And the position of the bathtub is different from that of the edge valve device.
Except when it is lower than a certain distance,
The reinforced check valve against the spring bias only when hot water is supplied.
And maintain the open state and the first air char
The valve is forcibly maintained in the closed state against the spring bias.
In addition, when the hot water is not supplied, the reinforced check valve and the first air char
An edge cut valve device for bath hot water supply, which has a control structure for releasing the forced state of the valve.