JPS6112518Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is applicable to so-called reheating, which heats the bathtub water by mixing high-temperature fluid such as steam or high-temperature water with the bathtub water, as well as hot water heating, showering, etc. Regarding a hot water supply device for a bath that can alternatively supply low-temperature hot water to a general hot water supply, in detail, a heating device that heats water supplied from a water supply channel can be used to switch the water supply amount to the heating device,
Alternatively, an operating tool is provided to switch between a reheating state in which a high temperature fluid for heating the bathtub stored water is generated and a general hot water supply state in which low temperature hot water for general hot water supply is generated by switching the heating capacity, and the discharge from the heating device is A valve device is provided for selectively switching the flow path between a reheating flow path state in which the flow path is communicated with a high-temperature fluid discharger disposed at the bottom of the bathtub, and a general hot water supply flow path state in which the flow path is communicated with a hot water tap for general hot water supply. , when the heating device is switched to the reheating state, the valve device is switched to the reheating flow path state, and when the heating device is switched to the general hot water supply state, the valve device is switched to the reheating flow path state. The present invention relates to a bath water supply device in which the valve device is operatively connected to the operating tool so as to switch to a general hot water supply flow path state.

[Conventional technology]

Conventionally, in the above-mentioned bath water heater,
The operation tool for switching the heating device and the valve device for switching the flow path are such that when the heating device is switched between the reheating state and the general hot water supply state, the valve device switches between the reheating flow path state and the general hot water supply flow path state. The discharge path from the heating device is connected to the high-temperature fluid discharger of the bathtub and the general hot water supply almost simultaneously when the heating device is switched by the operating tool. It was supposed to switch to a state where it communicates with the hot water tap (I can't provide any literature).

[Problem that the invention attempts to solve]

However, when the heating device is switched from the reheating state to the general hot water supply state by switching the water supply amount or heating capacity, high-temperature fluid for reheating remains in the heating device and its discharge path. When the valve device is switched at the same time as the device is switched to the general hot water supply state and the discharge passage from the heating device is communicated with the hot water tap for general hot water supply, the above-mentioned remaining high-temperature fluid for reheating unexpectedly enters the hot water tap for general hot water supply. There was a risk that the product would be discharged from the stopper and cause burns to the user.

The purpose of this invention is to rationally improve the operating configuration of the flow path switching valve device, so that unexpected reheating from the hot water tap for general hot water supply can be prevented without impairing the operability of switching between reheating and general hot water supply. It also prevents scale build-up in the reheating channel connected to the high-temperature fluid discharger of the bathtub, which is another problem with this type of bath water heater. The point is to make it possible to suppress the situation.

[Means for solving problems]

The characteristic configuration of the bath water heater according to the present invention is to generate high-temperature fluid for heating the water stored in the bathtub by switching the water supply amount or heating capacity of the heating device that heats the water supplied from the water supply channel. When the heating device is switched to the reheating state, the discharge path of the heating device is switched to the bathtub When the heating device is switched to the general hot water supply state side, the discharge path from the heating device is changed to the general hot water supply state. prevents the valve device from switching to the general hot water supply flow path state until the fluid discharged from the heating device reaches a set temperature or lower, with respect to the valve device that switches to the general hot water supply flow path state that communicates with the hot water tap of the heating device; A temperature-sensitive switching delay mechanism is provided to control the switching operation force applied to the operating tool toward the general hot water supply state, and when the switching prevention action of the switching delay mechanism is released, the valve device is switched to the general hot water supply state. The operation force accumulation mechanism which accumulates as a biasing force for switching to the utility flow path state is provided, and its functions and effects are as follows.

[Effect]

In other words, even when the operating tool is switched from the reheating state to the general hot water supply state and the heating device is switched from the reheating state to the general hot water supply state, the remaining high temperature fluid for reheating is still passing through the valve device. In other words, the temperature-sensitive switching delay mechanism attached to the valve device senses the temperature of the remaining high-temperature fluid for reheating, and the remaining high-temperature fluid for reheating is switched on until the detected temperature becomes equal to or lower than the set temperature. The valve device is prevented from switching to the general hot water supply flow path state until the passage through the valve device is completed.

Therefore, when switching from reheating to general hot water supply, there is no possibility that the high temperature fluid for reheating remaining in the heating device or its discharge path will be accidentally discharged from the hot water tap for general hot water supply. Prevented.

In addition, when the valve device switches from the flow path state for reheating to the flow path state for general hot water supply, the operation of the temperature-sensitive switching delay mechanism is delayed immediately after the remaining high-temperature fluid for reheating completes passing through the valve device. Due to such reasons, a situation occurs in which low-temperature hot water for general hot water supply from the heating device is temporarily supplied to the high-temperature fluid discharger side of the bathtub. It works to wash away the scale that tends to accumulate in the reheating channel between the two.

That is, since the flow path between the high temperature fluid discharge device and the valve device is a flow path exclusively for high temperature fluid for reheating,
Compared to the general hot water supply flow path between the valve device and the general hot water tap, or the common flow path between the heating device and the valve device, there is more scale accumulation, and this has caused problems in conventional maintenance. This had been a problem, but due to the above-mentioned flushing effect of low-temperature water as a side effect of installing the switching delay mechanism, the flow path for reheating between the high-temperature fluid discharger on the bathtub side and the valve device scale deposition is effectively suppressed.

On the other hand, when the temperature-sensitive switching delay mechanism prevents the valve device from switching to the general hot water supply flow path state, the operating force applied to the operating tool toward the general hot water supply state is The operation force is accumulated in the operating force storage mechanism as a biasing force for switching the flow path state to the general hot water supply flow path state, and then, when the remaining high-temperature fluid for reheating completes passing through the valve device, the switching prevention action of the temperature-sensitive switching delay mechanism is activated. When the is released, the valve device is automatically switched to the general hot water supply flow path state side using the biasing force,
Low-temperature hot water from the heating device, which has already been switched to the general hot water supply state by the previous operating tool operation, is supplied to the general hot water tap.

Therefore, although the device is equipped with a switching delay mechanism that temporarily prevents the valve device that is operated in conjunction with the operating tool from switching to the general hot water supply flow path state, the heating Switching between devices can be done with just one operation,
Because of the provision of the switching delay mechanism, the switching operation for the heating device and the switching operation for the valve device become separate operations, which has never happened, making the overall switching operation complicated.

[Effect of idea]

As a result of the above, we have created a bath water heater that is easy to use by easily switching between reheating and general hot water supply, and is also highly safe as there is no unexpected discharge of high temperature fluid from the hot water tap for general hot water supply. .

Furthermore, since scale accumulation can be effectively suppressed, it is advantageous in terms of maintenance, and as a whole, it has been possible to provide a bath water heater that is extremely suitable for general household use.

〔Example〕

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

5 and 6 show the overall configuration of a hot water supply device for a bath, and FIG. 5 shows the heating of water supplied from the water supply channel W to produce low temperature hot water, and the low temperature hot water is used for hot water supply for general hot water supply. On the other hand, FIG. 6 shows a general hot water supply state in which water is supplied to the tap 50. On the other hand, FIG. A reheating state is shown in which the water stored in the bathtub is heated by ejecting water from the disposed discharge device 52 and mixing it with the water stored in the bathtub.

47 in the figure is a water heating heat exchanger as a main component of a heating device that heats water supplied from the water supply channel W to selectively generate low-temperature hot water for general hot water supply and steam for reheating. , 67 is a main burner.

As auxiliary devices for the heating device, a water drain plug 41, a check valve with a strainer 42, and a water governor 43 are provided in the water supply line W, and a water supply valve 44, a limiting orifice 45, and a steam flow rate stabilizing valve 46 are provided in parallel. On the other hand, the fuel gas supply line G for the main burner 67 is provided with:
A thermocouple safety valve 61 which is held open only when the pilot burner 68 is in a proper combustion state, a gas cock 62, a water pressure responsive valve 63 which is held open only when the water supply state to the heat exchanger 47 is proper in conjunction with a water governor 43, and a gas governor 64 are interposed, and both a gas valve 65 and an auxiliary gas valve 66 are interposed in parallel.

Furthermore, in the figure, 48 is an overpressure safety valve, 49 is a low temperature operation valve, and 51 is a vacuum breaker valve, each of which is a safety valve.

The discharge path from the heating device, that is, the heat exchanger 4
The discharge path from 7 has an alternative between a general hot water supply flow path state in which this discharge path is communicated with the hot water tap 50 for general hot water supply, and an additional heating flow path state in which the discharge path is communicated with the discharge device 52 on the bathtub 63 side. A switching valve V is installed to switch between the two.

The bathroom is equipped with a remote control handle 15 that is linked to the water supply valve 44 and the auxiliary gas valve 66 in the heating device, respectively, and the switching valve V. 15 can be performed.

That is, when the remote control handle 15 is switched to the general hot water supply side, the water supply valve 44 is opened and the auxiliary gas valve 66 is closed, and the amount of water and fuel gas supplied to the heating device (heating capacity) is The remote control handle 15 is switched to the reheating side so that the quantity is changed to match the generation of low-temperature hot water at a predetermined temperature for general hot water supply, and the switching valve V is switched to the flow path state side for general hot water supply. When operated, the water supply valve 44 is closed and the auxiliary gas valve 66 is opened, so that the amount of water and fuel gas supplied to the heating device is an amount commensurate with the generation of steam at a predetermined temperature for reheating. and the switching valve V is configured to be switched to the reheat flow path state side.

In FIGS. 5 and 6, the valves shaded in black are the valves in the closed state.

Switching the heating device and the amount of water supplied to it, and
To explain in more detail how to switch between the general hot water supply state and the reheating state by switching the fuel gas supply amount, in the general hot water supply state, since the water supply valve 44 is in the open state, a large amount of water is supplied via the water supply valve 44. Feed water is continuously supplied to the heat exchanger 47, whereas
Since the auxiliary gas valve 66 is in the closed state, only a small amount of fuel gas is supplied to the main burner 67 via the gas valve 65, and as a result, the heating capacity is small for a large amount of water, so it is not suitable for general hot water supply. Low-temperature hot water at a suitable predetermined temperature is continuously produced. On the other hand, in the reheating state, since the water supply valve 44 is in the closed state, only a limited amount of supply water is supplied to the heat exchanger 47 via the limiting orifice 45 and the steam flow rate stabilizing valve 46; Then, the fuel gas flows through the opened auxiliary gas valve 66 and the gas valve 65 parallel to it.
A large amount of steam is supplied to the main burner 67 through both the main burner 67, and as a result, high-temperature reheating steam that can effectively heat the water stored in the bathtub is continuously generated because it has a large heating capacity for a small amount of water. be done.

The specific configuration of the switching valve V, as shown in FIG. 1, includes a fluid inlet 1 connected to the discharge path of the heat exchanger 47, a low temperature outlet 2 connected to the general hot water tap 50, and The high temperature outlet 3 connected to the discharge device 52 provided in the bathtub 63 is connected to the case body A.
In the case body A, the first and second valve seats 4 and 5 are provided in opposing positions at the branch point from the fluid inlet 1 to both outlets 2 and 3, and the first and second valve seats 4 and The first valve 6 works to connect the flow path from the fluid inlet 1 to the low-temperature outlet 2, and the second valve works to connect the flow path from the fluid inlet 1 to the high-temperature outlet 3 by working with the second valve seat 5. Two valves 7 are provided respectively.

That is, by opening the first valve 6 and closing the second valve 7 by operating the remote control handle 15, the heating device which has been switched to the general hot water supply state by the operation using the remote control handle 15 can be A general hot water supply flow path state for supplying the low temperature hot water to the general hot water tap 50 via the low temperature outlet 2 is revealed, and the first valve 6 is closed by operation using the remote control handle 15, and By opening the second valve 7, the reheating steam from the heating device, which has been switched to the reheating state by the operation using the remote control handle 15, is passed through the high temperature outlet 3 to the discharger 5 of the bathtub 53.
It is configured so as to reveal the state of the reheating flow path that supplies the fuel to the fuel.

The first valve 6 and the second valve 7 are respectively connected to a first valve shaft 10 and a second valve shaft 11 arranged on the same straight line.

The second valve shaft 11 is formed with a pilot passage 12 that communicates the fluid inlet 1 and the high temperature outlet 3 regardless of whether the second valve 7 is closed. A pilot valve 8 is connected to a first valve shaft 10 together with a first valve 6 via a valve holder 9.

The first valve shaft 10 is biased in the closing direction of the first valve 6 by a first elastic biasing device 13 interposed between it and the case body A, while the second valve shaft 11 is It is slidably supported by a tube 22 connected to the case body A while ensuring a flow path within the case body A, and is interposed between a support 23 screwed onto the end of the tube 22. The second valve 7 is
is biased in the opening direction.

Note that the biasing force of the second elastic biasing device 24 is the same as that of the first valve 6.
is in the open state, and each of the second valve 7 and the pilot valve 8 is in the closed state, and in this state, low-temperature hot water for general hot water supply is continuously supplied from the fluid inlet 1 to the low-temperature outlet 2. At this time, the second valve 7 is maintained in the closed state against the second elastic biasing member 24 due to the fluid pressure of the low-temperature hot water, and the pilot valve 8 is further closed from the closed state of the second valve 7. When the valve is opened and the fluid inlet 1 and the high-temperature outlet 3 communicate with each other via the pilot flow path 12, the second valve 7 causes the second elastic biasing member 24 to change due to the change in pressure balance caused by the communication.
The valve is set to open with a biasing force of .

In other words, when switching from the general hot water supply flow path state to the reheating flow path state, the first elastic biasing tool 13
The first valve 6 is closed with a biasing force of
By opening the pilot valve 8 along with the valve closing operation, the second elastic biasing member 24 applies the biasing force to the second
To open the valve 7 and to switch from the additional heating flow path state to the general hot water supply flow path state,
By pushing the first valve shaft 10 against the first elastic biasing device 13, the first valve 6 is opened, and along with this pushing, the pilot valve 8 is opened to the second valve.
The second valve 7 is brought into contact with the valve stem 11, and the second valve 7
The valve is closed against the second elastic biasing member 24.

25 in the figure indicates the point in time when the remote control handle 15 is switched from the reheating state to the general hot water supply state;
This is a switching delay mechanism installed in the switching valve V in order to create a time lag between when the switching operation actually switches the switching valve V from the reheating flow path state side to the general hot water supply flow path state side, Its main components include a temperature sensor 26 such as a wax pellet that expands in volume when heated by the fluid passing from the fluid inlet 1 to the high temperature outlet 3; A second valve closing prevention shaft 28 that prevents the second valve shaft 11 from moving toward the closing side of the second valve 7 in conjunction with the piston rod 27 that expands with the volume expansion of the piston rod 26; A third member that urges the movement blocking shaft 28 back to the blocking action release side.
A biasing tool 30 is provided.

In other words, even if the remote control handle 15 is operated to switch from the reheating state to the general hot water supply state and the switching operation force to the general hot water supply state is applied to the switching valve V, in the previous reheating state, The reheating steam generated in the heating device and remaining in the heat exchanger 47 of the heating device and the discharge path from the heat exchanger 47 to the switching valve V and the high-temperature hot water that is its condensate are the fluid in the switching valve V. While flowing from the inlet 1 to the high-temperature outlet 3, the temperature sensor 26 is maintained in a volumetric expansion state by heating with the residual reheating steam or high-temperature water, and the volumetric expansion causes the second valve to open. Closing prevention shaft 2
8 holds the second valve 7 in the open state by the displacement prevention action on the second valve shaft 11, and as the second valve 7 is maintained in the open state, the second valve shaft 11 and the pilot valve 8 The first valve 6 is held in a closed state by the contact between the first valve 6 and the first valve 6.

Then, the residual reheating steam and its condensed high-temperature hot water have completed passing from the fluid inlet 1 to the high-temperature outlet 3 of the switching valve V, and are switched to the general hot water supply state by the switching operation using the remote control handle 15. When the low-temperature hot water for general hot water supply from the heating device begins to flow from the fluid inlet 1 of the switching valve V to the high-temperature outlet 3, and accordingly, the temperature sensor 26 begins to shrink in volume, The second valve closing motion blocking shaft 28 is returned to its original position by the biasing force of the third elastic biasing device 30, thereby allowing the second valve 7 to close and the first valve 6 to open. be.

In other words, even if the remote control handle 15 is operated to switch from the reheating state to the general hot water supply state, the temperature-sensitive switching delay mechanism 25 prevents the switching valve V from switching to the general hot water supply flow path state until the residual reheating steam or the high-temperature hot water condensate has completed passing through the switching valve V, thereby preventing the residual reheating steam or the high-temperature hot water condensate from being accidentally discharged from the general hot water tap 50.

In the figure, 29 is a cylinder that slidably supports the second valve closing prevention shaft 28 and serves as a reaction force fulcrum for the third elastic biasing tool 30, and is in a state where a flow path is secured in the case body A. It is connected to the case body A.

Further, 31 is an elastic shock absorber for absorbing and mitigating abnormal expansion caused by overheating of the temperature sensor 26;
The support body 32 screwed onto the case body A is formed with a recessed portion to provide flexibility for escape from behind when the temperature sensing body 26 expands abnormally.

As the operation structure 14 for the switching valve V, an eccentric cam 17 is provided which is linked to the remote control handle 15 via a remote control wire 16, and the eccentric cam 1
A push pin 18 which is pressed by the action of a rotary cam 7 and the first valve shaft 10 are interlocked with each other.

The eccentric cam 17 is activated by the push pin 18 when the remote control handle 15 is switched to the general hot water supply state.
The rotational phase is set so that the pushing action on the push pin 18 is released when the remote control handle 15 is switched to the reheating state side, and the remote control handle 15 is switched to the general hot water supply state side. When the push pin 18 is pushed in, the first
The valve shaft 10 is pushed in so that the first valve 6 is opened and the second valve 7 is closed.
When the remote control handle 15 is switched to the reheating state side and the push pin 18 is released, the first valve shaft 0 is moved to close the first valve 6 by the biasing force of the first elastic biasing device 13. As a result, the first valve 6 is closed, and the pilot valve 8 is opened accordingly, and the second valve 7 is opened by the urging force of the second elastic urging member 24. It is designed so that it will be done.

Between the push pin 18 and the first valve shaft 10,
The pushing operation force applied to the push pin 18 by switching the remote control handle 15 to the general hot water supply state is applied to the first valve shaft 10 while the switching delay mechanism 25 is in the switching inhibiting state.
An operating force storage mechanism 19 is installed to accumulate the operating force as a pushing force against the reheating steam, and after the remote control handle 15 is switched from the reheating state to the general hot water supply state, the remaining reheating steam or its condensate is When the high-temperature hot water completes passing through the switching valve V and the switching prevention action of the switching delay mechanism 25 is released, the operation power storage mechanism 19 is activated by switching the remote control handle 15 to the general hot water supply state side. The accumulated urging force pushes the first valve shaft 10 and switches the switching valve V to the general hot water supply flow path state.

The specific configuration of the operating force storage mechanism 19 is such that one of the pair of supports 20 serves as a seat for the push pin 18 and is slidably fitted onto the first valve shaft 10 , and the other supports the push pin 18 . The first valve shaft 10 is fitted onto the first valve shaft 10 in a state where it is locked in the push-in operation direction, and an elastic biasing device 21 for storing force is interposed between the pair of supports 20.

In other words, when the switching delay mechanism 25 is in the switching inhibiting state and the first valve 6 is held in the closed state by contact with the second valve shaft 11, when the remote control handle 15 is moved to the general hot water supply state side. When the eccentric cam 17 pushes against the push pin 18 during the switching operation, the support 20 serving as a seat for the push pin 18 slides and displaces the push pin 18.
The pushing operation is allowed, and the force storage elastic biasing device 21 is compressed and deformed due to the sliding displacement, so that the pushing operation force applied to the push pin 18 is applied to the force storage elastic biasing device 21. Accumulated.

The operating force accumulated through compressive deformation of the force storage elastic biasing device 21 is applied to the pushing operation side of the first valve stem 10 via the support 20 that is locked to the first valve stem 10. After that, when the switching prevention action of the switching delay mechanism 25 is released and the second valve 7 is closed by the biasing force of the second elastic biasing device 24,
The first valve 6 is activated by the first elastic biasing device 1 due to the biasing action described above.
3, and the switching valve V is then switched to the general hot water supply flow path state.

Hereinafter, the operation of the switching valve V will be sequentially explained based on FIGS. 1 to 4.

(A) FIG. 1 shows the state of the flow path for general hot water supply, in which the remote control handle 15 has been switched to the general hot water supply state, and the eccentric cam 17 is pushing against the push pin 18.

Then, with the pushing action, the first valve 6
is held in the open state against the first elastic biasing member 13, the pilot valve 8 is held in the closed state of the pilot passage 12, and the fluid inlet 1 is held in the closed state.
The second valve 7 is held in the closed state against the second elastic biasing member 24 by the fluid pressure of the low temperature hot water for general hot water supply flowing from the low temperature outlet 2 to the low temperature outlet 2.

In this state, since there is no fluid flow from the fluid inlet 1 to the high-temperature outlet 3, the switching delay mechanism 25 is in a state in which the switching prevention action is released.

(b) Figure 2 shows the situation immediately after the remote control handle 15 is operated to switch from the general hot water supply flow path state in (a) above to the reheating state side. Eccentric cam 1 in conjunction
7 releases its pushing action on the push pin 18, and accordingly, the first valve 6 is closed by the biasing force of the first elastic biasing device 13.
At the same time, the pilot valve 8 is opened.

At this point, the heating device has been switched to the reheating state in which reheating steam is generated by switching the remote control handle 15 to the reheating state.

(c) Figure 3 shows that the pressure balance before and after the second valve 7 changes due to the opening of the pilot valve 8 shown in (b) above, and as a result, the second valve 7
4 shows the flow path state for reheating opened by the urging force of 4, and with the opening of the second valve 7, the flow path for reheating from the heating device that was switched to the reheating state side by the previous operation of the remote control handle 15 is shown. As the steam flows from the fluid inlet 1 to the high-temperature outlet 3, the temperature sensor 26 in the switching delay mechanism 25 expands in volume, thereby causing the second valve closing motion prevention shaft 28 to close to the second valve shaft 11. It is in a state of displacement prevention action.

(d) Figure 4 shows the situation immediately after the remote control handle 15 is operated to switch from the reheating channel state described in (c) to the general hot water supply state, and is linked to the switching operation of the remote control handle 15 to the general hot water supply state. eccentric cam 1
7 is in the state where the push pin 18 is pushed in, but the switching delay mechanism 25 is in the switching blocking action state, and the second valve closing movement blocking shaft 28 is in the state where the push pin 18 is pushed in.
Since the second valve 7 of No. 1 is prevented from shifting toward the closing side, the second valve 7 is held in the open state, and the first valve 6 is held in the open state by contacting the second valve shaft 11. is maintained in the closed state, and the switching valve V is still in the reheating flow path state.

In addition, since the first valve 6 is held in the closed state, the pushing operation force applied to the push pin 18 is accumulated in the operation force storage mechanism 19 through compressive deformation of the elastic force storage device 21. has been done.

In this state, the heating device has already been switched to the general hot water supply state by switching the remote control handle 15 to the general hot water supply state, but the remaining reheating steam or high-temperature hot water of its condensate is flowing through the fluid inlet. While the fluid is flowing from 1 to the high temperature outlet 3, the switching prevention action of the switching delay mechanism 25 continues, so that the state shown in FIG. 4 is maintained.

Then, the remaining reheating steam or its condensate high temperature hot water completes passing through the switching valve V, and the low temperature hot water for general hot water supply from the heating device that has already been switched to the general hot water supply state flows from the fluid inlet 1 to the high temperature outlet. 3, the switching delay mechanism 25
The switching prevention action is released, and the second valve closing prevention shaft 28 is operated to return due to the urging force of the third elastic urging member 30, and accordingly, the operation force storage mechanism 19
The first valve 6 is opened and the pilot valve 8 is closed by the biasing force accumulated in the second valve 7, and the second valve 7 is closed by the biasing force of the second elastic biasing member 24, and the first valve 6 is opened and the pilot valve 8 is closed. The state is changed to the general hot water supply flow path state as shown in the figure.

[Another example]

Next, another embodiment of the present invention will be described.

In the reheating state, the heating device generates high-temperature hot water,
The high-temperature hot water may be discharged from the discharge device 52 attached to the bathtub 53, and reheating may be performed by mixing the discharged high-temperature hot water and the water stored in the bathtub. Steam, high-temperature hot water for reheating, gas-liquid two-phase fluid for reheating of steam and high-temperature hot water, etc. are collectively referred to as high-temperature fluid.

A heating device that heats the supply water from the water supply channel W,
In order to switch between the reheating state that generates high-temperature fluid for heating the bathtub stored water (i.e., for reheating) and the general hot water supply state that generates low-temperature hot water for general hot water supply, the water supply amount to the heating device is switched and the heating is performed. The quantity switching may be performed only in either one.

As the operating tool 15 for switching the heating device between the reheating state and the general hot water supply state, various devices other than the remote control handle can be used.

The discharge path from the heating device can be selected between a reheating flow path state in which the discharge path is communicated with the high temperature fluid discharge device 52 disposed at the lower part of the bathtub 53 and a general hot water supply flow path state in which the discharge path from the heating device is communicated with the hot water tap 50 for general hot water supply. Various improvements can be made to the valve structure for uniform switching, and these valve structures are collectively referred to as a valve device V.

Furthermore, various improvements can be made to the specific interlocking structure between the operating tool 15 and the valve device V.

The temperature sensor 26 in the temperature-sensitive switching delay mechanism 25 can be of various types, such as a temperature-sensitive bellows in addition to a wax pellet.

The specific temperature of the high-temperature fluid for reheating and the specific temperature of the low-temperature hot water for general hot water supply can be set in various ways, and the switching prevention effect of the temperature-sensitive switching delay mechanism 25 can be canceled. The set temperature can also be set in various ways as long as it is a temperature that can ensure safety between the temperature of the high temperature fluid for reheating and the temperature of the low temperature hot water for general hot water supply.

The specific structure of the operating force storage mechanism 19 can be improved in various ways. For example, as shown in FIG. However, an elastic biasing device 33 for accumulating force may be interposed on the wire 16 that interlocks and connects the operating tool 15 and the bell crank 34.

[Brief explanation of the drawing]

1 to 6 show embodiments of the present invention,
FIGS. 1 to 4 are sectional views sequentially showing the operation of the valve device, and FIGS. 5 and 6 are overall configuration diagrams, showing a general hot water supply state and a reheating state. FIG. 7 is an enlarged view showing another embodiment of the present invention. 15... Operating tool, 19... Operating power storage mechanism, 2
5... Switching delay mechanism, 50... Hot water tap, 52...
High temperature fluid discharger, 53...bathtub, W...water supply channel,
V... Valve device.

Claims (1)

[Scope of utility model claims] A heating device that heats the supply water from the water supply channel W,
An operating tool 15 is provided for switching between a reheating state in which high-temperature fluid is generated for heating bathtub water and a general hot water supply state in which low-temperature hot water is generated for general hot water supply by switching the water supply amount or heating capacity. , a reheating flow path state in which the discharge path from the heating device is communicated with the high temperature fluid discharger 52 disposed at the lower part of the bathtub 53, and a general hot water supply flow path state in which the discharge path from the heating device is communicated with the hot water tap 50 for general hot water supply. A valve device V is provided that selectively switches to the reheating flow path state, and when the heating device is switched to the reheating state side, the valve device V is switched to the reheating flow path state side,
Further, the valve device V is connected to the operation tool 15 so that the valve device V is switched to the general hot water supply flow path state side when the heating device is switched to the general hot water supply state side.
A bath hot water supply device connected in conjunction with the heating device, the temperature sensitive type preventing switching of the valve device V to the general hot water supply flow path state until the fluid discharged from the heating device falls below a set temperature. A switching delay mechanism 25 is attached to the valve device V, and the switching operation force applied to the operating tool 15 to the general hot water supply state side is applied to the switching delay mechanism 25 as the switching blocking action of the switching delay mechanism 25 is released. A hot water supply device for a bath, which is provided with an operating force storage mechanism 19 that accumulates as a biasing force for switching the device V to the general hot water supply flow path state.