JPH0336847Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application and overview of the invention] This invention relates to a bath pot with a water heater, and by simply attaching an additional device to the existing bath pot, the existing bath pot can be automatically heated. It is possible to add tension function,
This made it possible to expand the functionality of the bathtub without having to replace it.

[Prior art and its problems]

For example, there is a bathtub with a water heater having a configuration as shown in FIG. 4, which has a function of supplying hot water to a shower etc. and a function of reheating a bath.

A pair of inflow pipes 10 and water discharge pipes 11 that protrude from the side wall of the bath heat exchanger 1 and constitute the bath reheating circuit 18 have their tips protruding from the back wall of the appliance case 2, and Heat exchanger for hot water supply 3
The hot water supply circuit 31 drawn out to the downstream side also has its tip 32 protruding from the back side of the appliance case 2.

In this device, a pair of bathtub pipes B, B protruding from the side wall of the bathtub A are connected to an inlet pipe 10 and a water discharge pipe 11 protruding from the bath heat exchanger 1, and a pair of bathtub pipes B, B protruding from the side wall of the bathtub A are connected to an inlet pipe 10 and a water discharge pipe 11 protruding from the bath heat exchanger 1. Downstream hot water circuit 31
The installation work is completed by piping the hot water faucet C to the.

In addition, in the above installation state, when the hot water supply faucet C is opened and a water flow is generated in the hot water supply circuit 31, the water pressure responsive gas valve 34 opens in conjunction with this, thereby causing the gas burner 36 for the water heater to combust. Hot water flows out from the hot water faucet C.

On the other hand, when the reheating gas burner 16 is combusted, the bath water in the bathtub A is naturally circulated within the reheating circuit 18 that connects the bathtub A and the bath heat exchanger 1, and the bath is boiled.

Recently, in addition to bathtubs with water heaters that have only the basic functions of hot water supply and bath reheating functions mentioned above, highly functional bathtubs that can automatically fill the bathtub with hot water have become available. The former type of bathtub has also become popular, and if you purchase and install a bathtub with the basic functions of the former, you may want to change it to a bathtub with an automatic hot water filling function.

However, in this case, with the above-mentioned type of bath pot, it is necessary to replace the entire existing bath pot, so if the bath pot before replacement is relatively new, it is necessary to replace the bath pot with an automatic hot water filling function. I had no choice but to hesitate to change to a bath pot, and had no choice but to continue using the existing bath pot, which only had basic functionality.

[Technical issues]

The present invention has been made in view of the above points, and includes: A bath pot with a water heater equipped with a hot water supply circuit 31 equipped with a heat exchanger 3 for hot water supply and an additional heating circuit equipped with a heat exchanger 1 for bath use. In order to add an automatic hot water filling function to an existing bath pot without having to replace it, the automatic hot water filling function can be added simply by externally adding an additional device to the existing bath pot. The technical challenge is to make it possible to grant the same.

〔means〕

The technical means of the present invention for solving the above problems is as follows: A bathtub with a water heater is constructed by a combination of a main body 5 and an additional device 6 added thereto as necessary. The configuration includes a first branch pipe 37 branched from a hot water supply circuit 31 formed on the downstream side of the hot water heat exchanger 3, and a second branch pipe connected to a flow path on the upstream side or downstream side of the bath heat exchanger 1. The pipe 38, the water pressure outlet pipe 39, and the blind plug 2 that closes each of the pipe terminals.
5, 26, 27, an opening 23 for piping work cut in the side wall or upper wall of the exterior case 51 and formed at a position opposite to each of the piping terminal parts, and further covering the opening 23 for piping work. On the other hand, the configuration of the additional device 6 is that the first and second branch pipes 3 provided in the main body 5 are combined with the decorative lid 28.
Bypass channel 6 connecting the tips of 7 and 38 with each other
2, a backflow prevention device 61 inserted into the bypass passage 62, and a solenoid valve 63 for hot water filling that is inserted upstream of the backflow prevention device 61 and opens in response to an input signal from a hot water filling switch 67; Furthermore, a water pressure switch 65 which outputs a valve closing signal for the hot water filling electromagnetic valve 63 and is connected to the water pressure outlet pipe 39 in the main body 5 described above is coupled.

[Effect]

The above technical means works as follows.

First, if you need a bathtub with a water heater that has only the basic functions of reheating the bath and hot water supply, you can install only the main body 5 by performing the same piping installation work as the conventional one described above. Install.

Next, if a hot water filling function is to be added to the main body 5 after it has been installed, the additional device 6 may be added to the existing main body 5 in the following manner.

That is, first, the decorative lid 28 that covers and closes the piping work opening 23 cut and formed in the side wall or top wall of the existing main body 5 is removed. Then, the first branch pipe 37 branched from the hot water supply circuit 31 and the first branch pipe 37 branched from the upstream or downstream flow path of the bath heat exchanger 1 are inserted into the pipe work opening 23 from which the decorative lid 28 has been removed. The piping ends of the second branch pipe 38 and the water pressure outlet pipe 39 are exposed, and the blind plugs 25, 26, 27 provided at each of the piping ends are removed.

Finally, the upstream end of the bypass flow path 62 in the additional device 6 is connected to the first branch pipe 37 and the other downstream end is connected to the second branch pipe 38, thereby bypassing both flow paths. When one of the water pressure outlet pipes 39 is connected to the water pressure switch 65 in the additional device 6, the installation work of the additional device 6 is completed.

When automatically filling a bath with hot water using a bathtub with a water heater attached with the additional device 6 as described above, the hot water filling switch 67 may be turned on.

When the hot water filling switch 67 is turned on, the hot water filling solenoid valve 63 is opened by the hot water filling switch 67, and the bypass passage 62 in the additional device 6, which had been blocked by the hot water filling solenoid valve 63, is opened. be in a state of being When the bypass flow path 62 is opened, the piping inside the main body 5 connected by the bypass flow path 62, that is, the first branch pipe 37 branched from the hot water supply circuit 31 of the main body 5 and the bath heat The second branch pipe 38 connected to the upstream or downstream flow path of the exchanger 1 is brought into communication, and thereby the hot water heated in the hot water supply heat exchanger 3 is transferred to the hot water supply heat exchanger 3. The hot water flows from the downstream hot water supply circuit 31 through the first branch pipe 37 to the bypass flow path 62, and then flows from the hot water filling solenoid valve 63 of the bypass flow path 62 to the backflow prevention device 61 to the second in the main body 5.
The water flows from the branch pipe 38 to the bathtub A, and filling of the bathtub A with hot water begins.

When the water level in the bathtub A rises as hot water continues to be filled in the bathtub A, the water pressure in the water pressure outlet pipe 39 drawn out from the upstream or downstream flow path of the bath heat exchanger 1 increases, and this increases the water pressure. It is transmitted to the water pressure switch 65 connected to the outlet pipe 39. Then, the water pressure switch 65 detects the rise in water pressure and outputs a signal indicating this state when the bathing water reaches a predetermined level.

Then, when a signal indicating that the bathing water in the bathtub A has reached a certain level is output from the water pressure switch 65, the solenoid valve 63 for filling hot water is closed by the signal. , the filling operation stops.

As described above, according to the technical means of the present invention, an automatic hot water filling function can be imparted to an existing bath pot simply by adding the additional device 6 to the bath pot.

〔effect〕

Just by adding the additional device 6 to the existing bath pot,
Since the bath pot can be provided with an automatic hot water filling function, even after the bath pot is installed, there is no need to replace the existing bath pot in order to add the automatic hot water filling function.

〔Example〕

Next, the embodiments of the present invention described above will be described in detail with reference to the drawings.

As shown in FIG. 1, the bathtub of the present invention is composed of a main body 5 and an additional device 6 attached to the main body 5 as necessary.

An opening 23 for piping work is cut in the side wall portion of the exterior case 51 of the main body 5, and a decorative lid 28 is attached to the opening 23 for piping work by fixing screws 29, 2.
9, it is removably covered. In the portion of the main body 5 facing the opening 23 for piping work, first and second branch pipes 37, 38, and further piping terminal parts such as a water pressure outlet pipe 39 are located. , these piping terminals are closed with blind plugs 25, 26, and 27, respectively.

The internal structure of the main body 5 is configured as shown in FIG. 2, and a first branch pipe 37 branches from the hot water supply circuit 31 on the downstream side of the hot water heat exchanger 3, and the tip thereof is connected to the exterior casing. The opening 23 for piping work in the side wall of the case 51 is pulled out. In addition, a hydraulic responsive gas valve 34 that opens and closes by detecting the water flow in the hot water supply circuit 31 is inserted into the gas circuit 33 that connects the hot water supply gas burner 36 that heats the hot water heat exchanger 3 .

Further, a second branch pipe 38 branches from the upstream flow path of the bath heat exchanger 1 connected to the bathtub A, and a water pressure outlet pipe 39 branches from the other downstream flow path. The tip of the outer case 51 is also
It extends to the opening 23 for piping work cut in the side wall of the pipe. In addition, igniters 12, 12 are provided near the reheating gas burner 16 that heats the bath heat exchanger 1 and the above-mentioned hot water supply gas burner 36 to ignite these. , can be operated by a remote control device 8 provided outside the instrument.

On the other hand, a bypass flow path 62 is formed in the additional device 6 to connect the first and second branch pipes 37 and 38 provided in the main body 5, and both ends of the bypass flow path 62 are connected to each other. It faces an opening window 68 cut and formed in the side wall of the additional device 6. A hot water filling electromagnetic valve 63 is inserted into the bypass passage 62, and a backflow prevention device 61 and a suction pump P are inserted in this order on the downstream side thereof.

In addition, the above-mentioned hot water filling solenoid valve 6 is installed in the additional device 6.
A water pressure switch 65 that outputs a valve closing signal of 3 is loaded, and the water pressure switch 65 is connected to the main body 5 described above.
It is connected to a water pressure outlet pipe 39 drawn out from the downstream flow path of the bath heat exchanger 1 in the bathtub heat exchanger 1.

The above-mentioned hot water filling solenoid valve 63 and water pressure switch 65
is electrically wired as shown in FIG.
The output of the water pressure switch 65 is applied to the reset input terminal of the FF71, and the output of the FF71 causes the hot water filling solenoid valve 63 and the suction pump P to be activated.
It has become possible to turn it on and off.

Next, the actual use of the bathtub with water heater described in the above embodiment will be explained.

First, if you need a bathtub with a water heater that has only the basic functions of reheating the bath and hot water supply, you can install the main body 5 by performing the same piping installation work as the conventional one described above. Install the chisel. In this case, hot water supply and reheating of the bath can be performed by operating in the same manner as in the conventional system described above.

Next, if a bath filling function is to be added to the main body 5 after it has been installed, the additional device 6 may be added to the existing main body 5 in the following manner.

That is, first, the decorative lid 28 that covers and closes the opening 23 for piping work, which is cut and formed in the side wall of the existing main body 5, is removed, and the first branch pipe 37 branched from the hot water supply circuit 31, Bath heat exchanger 1
The second branch pipe 38 branched from the upstream side of the bath heat exchanger 1 and the end portion of the water pressure outlet pipe 39 branched from the downstream flow path of the bath heat exchanger 1 are exposed. A blind plug 2 provided at each end of the pipe
Remove 5, 26, and 27.

Next, both ends of the bypass passage 62 in the additional device 6 are connected to the first and second branch pipes 3 as shown in FIG.
7 and 38 separately to bypass both flow paths, and furthermore, the remaining water pressure outlet pipe 3 in the main body 5 is connected to
9 is connected to the water pressure switch 65 in the additional device 6, and the solenoid valve 63 for hot water filling and the water pressure switch 65
When the hot water filling switch 67 already incorporated in the remote control device 8 is electrically connected as shown in FIG. 3, the work for adding the additional device 6 is completed.

Next, the actual use of the bathtub with water heater to which the additional device 6 is added as described above will be described.

First, the case of automatically filling a bath with hot water will be explained.

When automatically filling the bath with hot water, all you have to do is turn on the hot water filling switch 67;
7, the input signal is applied to the FF 71, and the FF 71 outputs an "H" signal.
As a result, the hot water filling electromagnetic valve 63 opens and the suction pump P starts to drive, and the water in the hot water supply circuit 31 is transferred from the downstream part of the hot water supply heat exchanger 3 to the first branch pipe 37.
→ Water filling electromagnetic valve 63 in the bypass flow path 62 → Backflow prevention device 61 → Suction pump P → Second branch pipe 38 in the main body 5 → Bathtub A, and the water flow generated at this time is transferred to the first branch pipe for the water heater. The water pressure responsive gas valve 34 inserted into the gas circuit 33 to 37 detects this and opens the valve, whereby the flame is transferred from the igniter 12 to the hot water supply gas burner 36 and the first branch pipe 37 is combusted. Then, the hot water in the hot water supply circuit 31 heated and heated by this combustion is sent to the bathtub A, and filling with hot water begins.

When the amount of bathing water in the bathtub A reaches a bathing level, the water pressure switch 65 detects this and resets the FF71. When the FF71 is reset, an "L" signal is output from the FF71. At the same time, the suction pump P stops and the electromagnetic valve 63 for filling hot water returns to the closed state, whereby the operation of filling the bathtub A with hot water is stopped and completed.

In addition, when the hot water supply faucet C is opened to dispense hot water from the hot water supply faucet C, a water flow is generated in the hot water supply circuit 31, so that the water in the hot water supply circuit 31 is used for heat exchange for hot water supply, as in the case of automatic hot water filling described above. The temperature of the heated water is increased in the vessel 3, and the heated hot water flows out from the hot water faucet C which is in the open state.

Moreover, when reheating the bath, if the remote control device 8 is operated to combust the reheating gas burner 16 in the same way as in the conventional one described above, the bathing water in the bathtub A can be reheated. The bath can be reheated by natural circulation between the heat exchanger 1 and the bath heat exchanger 1.

In the above embodiment, the second branch pipe 38 is branched from the upstream flow path of the bathtub heat exchanger 1, but it may be branched from the downstream flow path of the bathtub heat exchanger 1. . In addition, in the above embodiment, the bath heat exchanger 1
Although the hydraulic pressure outlet pipe 39 is branched from the downstream flow path, it may be branched from the upstream side of the bath heat exchanger 1.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing the external appearance of an embodiment of the present invention, Fig. 2 is a detailed view thereof, and Fig. 3 is a suction pump P.
FIG. 4 is an explanatory diagram of a conventional example. In the figure, 1...heat exchanger for bath, 3... heat exchanger for hot water supply, 5... main unit. , 6...Additional device, 23...Opening for piping work, 25, 26, 27...Blind plug, 28
... Decorative lid, 37 ... First branch pipe, 38 ... Second
Branch pipe, 39...Hydraulic pressure outlet pipe, 61...Backflow prevention device, 62...Bypass passage, 63...Solenoid valve for hot water filling, 67...Hot water filling switch.

Claims (1)

[Scope of utility model registration request] A hot water supply circuit 31 including a hot water supply heat exchanger 3;
In a bath pot with a water heater equipped with a reheating circuit that is equipped with a bath heat exchanger 1, the bath pot with a water heater is constructed by combining a main body 5 and an additional device 6 added thereto as necessary. The main body 5 has a hot water supply circuit 31 formed downstream of the hot water supply heat exchanger 3.
A first branch pipe 37 branched from the bath heat exchanger 1, a second branch pipe 38 and a water pressure outlet pipe 39 connected to the flow path on the upstream side or downstream side of the bath heat exchanger 1, and a blind plug that closes each of the pipe terminals. 25, 26, 27, and an opening 2 for piping work cut in the side wall or upper wall of the exterior case 51 and formed at a position opposite to each of the piping terminal parts.
3 and a decorative lid 28 that covers the piping work opening 23 are combined.On the other hand, the additional device 6 has a structure that connects the first and second branch pipes provided in the main body 5. 37 and 38, a backflow prevention device 61 inserted into the bypass flow path 62, and a hot water filling switch 67 inserted upstream of the backflow prevention device 61.
A water pressure solenoid valve 63 that opens when the water filling solenoid valve 63 is turned on, and a water pressure switch 65 that outputs a closing signal for the water filling solenoid valve 63 and is connected to the water pressure outlet pipe 39 in the main body 5 described above. A bathtub with a water heater that combines the two.