JP3536604B2 - Heating device with bath device and method of inspecting device for water leakage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for hot water heating, a bath device for filling a bath, reheating, etc., a heating device with a bath device combining these two devices, and respective devices thereof. A water leakage inspection method for inspecting the presence or absence of water leakage in piping.

[0002]

2. Description of the Related Art A conventional heating apparatus with a bath apparatus has, for example, the structure shown in FIG.

This heating device with a bath device is provided with a hot water supply circuit A, a heating circuit B, a bath circuit C, and a drop circuit D, and has functions of hot water supply, heating, bath filling and reheating. I have. Incidentally, above the broken line in the figure is the lower inside than the broken line of the device body Z ₀ corresponding respectively to the outside of the apparatus main body Z _0.

The above hot water supply circuit A includes a hot water supply heat exchanger 14 heated by a gas burner (not shown). The water supply side of the hot water supply heat exchanger 14 is provided with a water temperature sensor 12 for detecting a water temperature and a water quantity detection. A water temperature sensor 15 for detecting the temperature of hot water from the hot water supply heat exchanger 14 on the tapping side, a water quantity servo valve 1 for limiting the hot water quantity, a bathtub 10 to be described later, A hot water supply temperature sensor 16 for detecting the hot water supply temperature is provided, and a bypass valve 11 is disposed in the middle of a bypass path that short-circuits the water inlet side and the hot water side by bypassing the hot water supply heat exchanger 14. It is configured.

Moreover, the heating circuit B, for example, floor heating panel, relative to the radiator 20 for various hot water heating such Fankon vector, device body Z ₀ the fittings 28a, 28
b and external piping 29a, which is constituted by connecting through a 29 b, the device body Z ₀ internal heating circuit B,
A heating circulation pump 31, a heating heat exchanger 22 heated by a gas burner (not shown), a tapping temperature sensor 23 for detecting a tapping temperature from the heating heat exchanger 22, an expansion tank 21 for always maintaining a constant water volume, and a bath reheating Bath heater 24, bath heat valve 32, and bypass passage 25 are provided.

The expansion tank 21 is provided with a water level electrode 46 for detecting a water level, and one ends of a water supply pipe 48 and an overflow pipe 45 are connected to each other.
The other end of 8 is connected to the water inlet side of hot water supply circuit A, and the other end of overflow pipe 45 is open to the atmosphere. Further, in the middle of the water supply pipe 48, the vacuum breaker 2
7, a rehydration valve 30 and a check valve 47 are provided.

Further, manual valves 60a and 60b for maintenance and inspection are provided in the middle of each of the external pipes 29a and 29b, and various radiators are provided in the middle of the external pipe 29a to the radiator 20. A plurality of thermal valves 33 are provided for connection of 20.

Usually, the manual valves 60a and 60b are opened except during maintenance and inspection, and among the plurality of thermal valves 33, the thermal valve 33 to which the radiator 20 is actually connected is opened. However, those where the radiator 20 is not connected
It is always closed by a stopper plug (not shown).

The bath circuit C connects the apparatus main body Z ₀ to the connection fitting 9.
a, 9b and external pipe 26a, which is constructed by connecting the circulation fitting 7 provided in the bathtub 10 through 26b, the device body Z ₀ internal bath circuit C, the bath heater 24 is connected to the middle In addition, a pressure sensor 5 for detecting the water level of the bathtub 10, a bath circulation pump 3, a water flow switch 6 for detecting the presence or absence of hot water circulation in the bathtub 10, and a bath temperature sensor 19 for detecting the temperature of the bathtub 10 are provided.

The drop circuit D connects between the hot water supply circuit A and the bath circuit C, and drops hot water from the hot water supply circuit A into the bathtub 10 via the bath circuit C. A vacuum breaker 17, a drop valve 2, and a check valve 18 are provided.

The operation of the above configuration will be described.

In the case where heating is performed by supplying warm water to the radiator 20, in this case, the gas burner is burned to heat the heating heat exchanger 22 and the heating circulation pump 31 is driven by the control of a controller (not shown). is, after being heated in the heating heat exchanger 22 hot water in the expansion tank 21 is flow out in the heating circulation pump 31, the device body Z ₀ device from the inner side body Z ₀ is external side forward external piping 29a, radiator 20, circulating sequentially via the return external pipe 29b.

In this case, since the bath heat valve 32 is closed, it does not flow through the bath heater 24.

When the water level electrode 46 detects that the amount of hot water in the expansion tank 21 has become smaller than a predetermined amount due to evaporation or the like, the water supply valve 30 is opened and the hot water supply circuit A is opened.
Water from the side is supplied to the expansion tank 21 via the refilling pipe 48.
It will be rehydrated inside.

In the case of performing bath reheating In this case, under the control of a controller (not shown), all the heat operated valves 33 are closed on the heating circuit B side, the gas burners are burned, and the heating heat exchanger 22 is heated. At the same time, the heating circulation pump 31 is driven, and the bath heat valve 32 is opened. At the same time, on the bath circuit C side, the bath circulation pump 3 is started, and the hot water in the bathtub 10 is circulated through the bath circuit C.

Thus, on the heating circuit B side, the hot water in the expansion tank 21 flows out of the heating circulating pump 31 and is heated in the heating heat exchanger 22, and then from the bath heater 24, the bath heat valve 32 is expanded. Circulated via the tank 21. Then, when passing through the bath heater 24, the hot water flowing in the bath circuit C is heated, and the bath water stored in the bath 10 is reheated.

When the radiator 20 is used at the same time, the heat valve 33 is opened, the hot water heated by the heating heat exchanger 22 is branched and passes through the bath heater 24, and the same as above. the apparatus main body Z ₀ is external side forward external piping 29a, the radiator 20 is circulated via a return external piping 29b sequentially.

When hot water is dropped into bathtub 10 In this case, hot water adjusted to a predetermined temperature in hot water supply circuit A is supplied into bathtub 10 through drop circuit D and bath circuit C.

By the way, tub 10 by using the case where newly installing a bathtub 10 and the radiator 20 with the apparatus main body Z _0, the device body Z ₀ the external piping 26a, 26b, 29a, and 29b, etc.
Or a radiator 20 at that time, it is necessary to inspect the piping system for water leakage. In particular, external piping 29a, 29b for connecting to the radiator 20
It is often important to inspect for water leakage after construction because it is often run for a long time.

Therefore, in the prior art, after the completion of piping work, a water leak test is performed as follows.

For example, in the case of a water leak inspection on the radiator 20 side, first, a predetermined portion of each of the external pipes 29a and 29b is removed by using a hand-pressed pressure pump 70 and a pressure gauge 72, and then, The pressurized pump 70 is connected to the removed external pipe 29a, while the return external pipe 29a is connected.
A stop valve (not shown) is attached to b.

Then, with the closing valve first opened, the pressurizing pump 70 is manually operated to evacuate the air in the piping, and then the closing valve is closed and the pressurizing pump 70 is operated again to operate the piping. Apply the specified water pressure to After a lapse of a predetermined time (for example, two to three minutes), a change with time in the water pressure is checked by the pressure gauge 72 to check whether or not water leakage has occurred in the piping.

[0023]

However, as described above, in the water leakage inspection after the completion of the piping work, the application of water pressure to the piping using the hand-pressed pressure pump 70 is a work for inspection. Not only is it troublesome, but also the determination of the presence or absence of water leakage must be made while the operator looks at both the clock and the pressure gauge, which requires extra labor and labor, resulting in poor inspection efficiency.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to automatically perform a water leak inspection so that extra labor and time can be reduced as much as possible. The task is to

[0025]

According to the present invention, the following means are provided to solve the above-mentioned problems.

That is, according to the first aspect of the present invention, there is provided a heating circuit in which an expansion tank, a heating circulation pump, a heating heat exchanger, and various radiators for hot water heating are sequentially connected,
When a water supply pipe for external water supply is connected to this heating circuit,
In particular, the heating circuit should be a closed circuit that is not opened to the atmosphere.
In a heating device with a bath device equipped with a closed circuit constructing means
The closed circuit constructing means is configured to:
A gate valve in the middle of the heating circuit before and after
Further comprising an expansion tank partitioned by the gate valve
The refilling pipe is connected to a part of the heating circuit that is not
You.

According to the second aspect of the present invention, the expansion tank, the heating circulation
Ring pumps, heating heat exchangers, and various types of water heaters
It has a heating circuit in which heaters are connected in sequence.
A water supply pipe for external water supply is connected to the
Closed circuit structure that makes the heating circuit a closed circuit that is not opened to the atmosphere
In a heating device with a bath device provided with construction means,
The circuit construction means is to make the expansion tank pressure-resistant.
In the middle of the expansion tank overflow piping,
The valve is arranged.

According to the third aspect of the present invention, each of the hot water heating
Heating circuit connected to the seed radiator and connected to the bathtub
A bath circuit, wherein the heating circuit comprises an expansion tank,
Circulation pumps, heating heat exchangers and rehydration pipes are provided
And the bath circuit includes a bath circulation pump, a bath
A heat exchanger, circulating metal fittings in the bathtub, and
In a heating device with a bath device,
At least one of the circuit and the bath circuit is open to the atmosphere
There is provided a closed circuit constructing means for providing no closed circuit.

According to the fourth aspect of the present invention,
In the heating device with a bath device, the closed circuit constructing means includes a warming device.
The chamber circuit and the bath circuit are connected via short-circuit piping,
Place gate valves before and after the expansion tank in the
Adapter for short circuit to circulating bracket that connects circuit to bathtub
Is installed.

[0030] In the invention of claim 5, wherein, according to claim 3, wherein
In the heating device with a bath device, the closed circuit constructing means
Are the forward and return sides of the heating circuit before and after the radiator, respectively.
, While the bath circuit is connected by branch piping.
Branch and position the other end of the branch pipe outside the main unit.
And connected to the part of the heating circuit separated by the double-sided cutoff valves.
Continued.

In the water leak inspection method according to claim 6,
Item 1. An expansion tank for a heating device with a bath device according to item 1.
Close the cutoff valves before and after
Open the refill valve provided and connect to the heating circuit via the ear water piping.
It is characterized by applying water pressure.

[0032] In the water leakage inspection method according to claim 7, wherein, for a bath device with heating system according to claim 2, overflow
Close the air release valve of the low pipe and
It is characterized in that a water supply valve provided therein is opened and water pressure is applied to the heating circuit via a water supply pipe.

[0033] In the water leakage inspection method according to claim 8, wherein
Item 4. The heating device with a bath device according to item 4, wherein the expansion tank
Close the cutoff valves before and after
Open the short-circuit valve provided, and install the drop piping, bath circuit, and short circuit.
It is characterized in that water pressure is applied to the heating circuit via a stub .

[0034] In the water leakage inspection method according to claim 9, wherein
As for the heating device with a bath device according to item 5, the return side and return
Close the cut-off valves on the side of the
Open the open / close valve inside, and from the bath circuit via the branch piping
It is characterized in that water pressure is applied to a heating circuit located outside the apparatus main body .

In the water leak inspection method according to the tenth aspect , the
Water leak inspection method according to any one of claims 6 to 9.
Method, detecting the water pressure in the circuit after applying the specified water pressure
And the water pressure gradually drops immediately after the start of the water pressure detection
The time it takes to reach the reference value, or
It is characterized in that the presence or absence of water leakage is determined according to the degree of pressure drop .

[0036]

[0037]

[0038]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a diagram showing a configuration of a heating device with a bath device according to Embodiment 1 of the present invention, and a portion corresponding to the conventional example shown in FIG. Assign a sign.

[0039] In the embodiment 1, in order to allow the water leakage test over and out of the apparatus main body Z ₁ bath circuit C, and the heating circuit B, and employs the following configuration.

[0040] That is, in the apparatus main body Z _1, and the upstream side of the bath heater 24 baths circuit C and the downstream side of the heating heat exchanger 22 of the heating circuit B is, are short-circuited through the short pipe 52, the A short-circuit valve 36 is provided in the middle of the short-circuit pipe 52. Further, cutoff valves 34 and 35 are provided before and after a pipe connected to the expansion tank 21 of the heating circuit B, and a pressure relief valve 50 is provided on a fitting 28b connecting the external pipe 29b on the return side.

At the time of the water leak inspection, the adapter 4 is attached to the circulation fitting 7. This adapter 4
As shown in FIG. 2, the external piping 26a, 26b of the bath circuit C
This is for short-circuiting the two without opening the inside of the bathtub 10, and the adapter 4 is provided with a pressure safety valve 57.

In the first embodiment, the drop valve 2, the adapter 4, the short-circuit pipe 52, and the cutoff valves 34, 35 constitute closed circuit construction means.

The other configuration is the same as that of the conventional example shown in FIG. 8, so that the detailed description is omitted.

Next, a procedure for performing a water leak test in the configuration shown in FIG. 1 will be described. In this case, control such as opening and closing of each valve is performed by a controller (not shown).

First, with the drop valve 2 of the drop circuit D closed and the water quantity servo valve 1 of the hot water supply circuit A closed, the expansion tank 2 is closed.
The front and rear cutoff valves 34 and 35 are closed, and the short circuit valve 36 in the middle of the short circuit pipe 52 is opened to short-circuit the bath circuit C and the heating circuit B.

Next, the drop valve 2 of the drop circuit D is opened, and the water servo valve 1 of the hot water supply circuit A is gradually opened in order to avoid suddenly applying water pressure to the heating circuit B and the bath circuit C.
The water pressure of the tap water passing through the hot water supply circuit A is applied to the bath circuit C via the drop circuit D and also to the heating circuit B via the short circuit pipe 52.

However, in this case, since the front and rear cutoff valves 34 and 35 of the expansion tank 21 are closed, no water pressure is applied to the inside of the expansion tank 21. Each circuit B,
If the air in the pipe C is discharged through the pressure relief valves 50 and 57, the pipe is reliably filled with water.

Then, as shown in FIG. 3, when the water pressure detected by the pressure sensor 5 of the bath circuit C reaches a predetermined value Va, both the water volume servo valve 1 and the drop valve 2 of the hot water supply circuit A are turned off. Close. Thereby, the bath circuit C and the heating circuit B
Becomes one closed circuit.

The external piping 29a, 29b, 2 of each circuit B, C
Since a heat-resistant polyethylene resin or the like is sometimes used for 6a and 26b, the water pressure detected by the pressure sensor 5 is equal to the external piping 29a, 29b, 26a, and 2 of each circuit B and C.
6b gradually decreases regardless of the presence or absence of water leakage due to the influence of expansion or the like, but if there is water leakage (shown by a broken line in the figure), there is no water leakage (solid line in the figure) (Shown), the degree of water pressure drop is greater.

Then, after the water pressure reaches a predetermined value Va,
The times t ₁ and t ₂ from when the water pressure decreases to the value of Vb until the water pressure further decreases to reach Vc are measured, and those times t ₁ and t ₂ are compared with the reference time ts. For example,
was judged to be acceptable as no t ₁ ≧ ts if water leakage, it is determined that failure as there t ₂ <ts if water leakage.

The controller (not shown) notifies the inspector of the success or failure by using a buzzer, a lamp, or the like.

[0052] Thus, it is possible to automatically perform collectively check water leakage device body Z ₁ of the inner and outer over heating circuit B and the bath circuit C.

Embodiment 2 FIG. 4 is a diagram showing a configuration of a heating device with a bath apparatus according to Embodiment 2 of the present invention, and portions corresponding to Embodiment 1 shown in FIG. .

[0054] In the first embodiment described above, for the heating circuit B, and is to perform the inspection of the leak over the inside and outside of the device body Z _1, in this embodiment 2,落込circuit D
And through the bath circuit C, by adding a water pressure heating circuit B located outside the apparatus main body Z _2, device body Z ₂
The water leak inspection can be performed only for the heating circuit B located outside of FIG.

[0055] That is, the apparatus main body Z ₂ is typically in the case of products shipped assembled this, water leakage test is performed in advance. Therefore, water leakage inspection of the on-site construction of is required, the heating circuit B located outside the apparatus main body Z ₂ is the main processor.

[0056] While these circumstances, in the embodiment 2, the edge cutting valves 55a, 55b are provided respectively on the outward side and the return side of the pipe section of the heating circuit B in the apparatus main body Z _2, bath circuits C There is branched by the branch pipe 53, the other end of the branch pipe 53 is connected to Netsudoben 33 provided outside the pipe 29a of the forward side of the heating circuit B located outside the apparatus main body Z _2. And the branch pipe 53
Is provided with an on-off valve 37 and a pressure sensor 38.

In the second embodiment, the above-described gate valve 55
The closed circuit constructing means on the heating circuit B side is constituted by a, 55b and the on-off valve 37. The closed circuit constructing means on the bath circuit C side is constituted by the drop valve 2, the on-off valve 37 and the adapter 4. .

The other structure is the same as that of the first embodiment shown in FIG.
In this case, the detailed description is omitted.

Next, a procedure for performing a water leak test in the configuration shown in FIG. 4 will be described. In this case, control such as opening and closing of each valve is performed by a controller (not shown).

Here, the procedure of the water leak inspection of the heating circuit B will be described.

[0061] In the closed state of the water amount servo valve 1 of the hot water supply circuit A, edge cutting valve 55a, close the 55b, disconnecting the device body Z ₄ inside the heating circuit B.

[0062] Also, open the落込valve 2 of落込circuit D, further, to open the middle of the opening and closing valve 37 of the branch pipe 53, communicates the heating circuit B located outside the bath circuit C and the apparatus main body Z _2.

Next, when the water amount servo valve 1 of the hot water supply circuit A is gradually opened, the water pressure of the tap water passing through the hot water supply circuit A is reduced.
Applied to the heating circuit B located outside the apparatus main body Z ₂ through the bath circuit C, further branch pipe 53 from.

However, in this case, the cutoff valves 55a, 55b
Since is closed, never water pressure is applied to the apparatus main body Z ₂ inner side. Further, if the air in the piping of each circuit B is discharged via the pressure relief valve 50, the piping is reliably filled with water.

The excess pressure is released by the pressure relief valve 50 previously adjusted so that the water pressure detected by the pressure sensor 38 becomes the predetermined value Va, and then the water amount servo valve 1, the drop valve 2, and the on-off valve 37 are closed together. Accordingly, the heating circuit B is closed circuit in the apparatus main body Z ₂ outside.

Thereafter, based on the detection output of the pressure sensor 38, as shown in FIG. 3, it is determined whether the water leak has passed or failed, and the inspector is notified of that.

[0067] Thus, it is possible to inspect the water leakage heating circuit B that is external to the apparatus main body Z ₂ automatically.

In the second embodiment as well, if the adapter 4 with the pressure relief valve 57 is attached to the circulation fitting 7, it is possible to perform a water leak test on the bath circuit C side.

That is, the on-off valve 3 in the middle of the branch pipe 53
7, the water leak test of only the bath circuit C can be independently performed in the same procedure as in the first embodiment.
Further, if the on-off valve 37 in the middle of the branch pipe 53 is kept open, the water leak inspection of the heating circuit B and the bath circuit C can be performed simultaneously and collectively.

In the second embodiment, the manual valves 60a and 60b may be closed in advance without providing the cutoff valves 55a and 55b. However, in this case, the pressure relief valve 5
0 must be provided in a closed circuit.

Embodiment 3 FIG. 5 is a diagram showing a configuration of a heating device with a water heater according to Embodiment 3 of the present invention, and portions corresponding to the conventional example shown in FIG. 8 are denoted by the same reference numerals.

In the third embodiment, when compared with the configuration of the conventional example shown in FIG. 8, the bath circuit C and the drop-in circuit D are not provided, and accordingly, the bath heater 24 and the bath heater in the heating circuit B are provided. The thermal valve 32 is omitted.

Further, in the apparatus main body Z ₃ , cutoff valves 34 and 35 are provided before and after the pipe connected to the expansion tank 21 of the heating circuit B, and one of the cutoff valves 34 of the heating circuit B and the heating circulation. One end of a water supply pipe 48 branched from the water inlet side of the hot water supply circuit A is connected to the pump 31, and a pressure sensor 36 is provided downstream of the check valve 47 of the water supply pipe 48. Further, a pressure relief valve 50 is connected to the connection fitting 28b for connecting the return-side external pipe 29b.
Is provided.

In the third embodiment, the above-mentioned rehydration valve 30,
The shutoff valves 34 and 35 constitute closed circuit construction means of the heating circuit B.

The other configuration is the same as that of the conventional example shown in FIG. 8, and a detailed description is omitted.

Next, a description will be given of a procedure for performing a water leak test of the heating circuit B in the configuration shown in FIG.
In this case, control such as opening and closing of each valve is performed by a controller (not shown).

In this case, the front and rear cutoff valves 34 and 35 of the expansion tank 21 are both opened, and the water refill valve 30 is opened, and then the heating circulation pump 31 is driven. This allows
The air in the piping of the heating circuit B is discharged from the expansion tank 21 to the outside via the overflow piping 45, and the piping of the circuit B is reliably filled with water.

If it is detected by the water level electrode 21 that no air remains in the expansion tank 21, the driving of the heating circulation pump 31 is stopped, and the cutoff valves 34, 35 and the water replacement valve 30 are stopped. Close together.

When the water refill valve 30 is opened from this state, the water pressure of the tap water is applied to the heating circuit B via the water refill pipe 48 branched on the water inlet side of the hot water supply circuit A. However, in this case, since the front and rear cutoff valves 34 and 35 of the expansion tank 21 are closed, no water pressure is applied to the inside of the expansion tank 21.

Then, as shown in FIG. 3, the pressure relief valve 50 previously adjusted so that the water pressure detected by the pressure sensor 36 in the middle of the water supply pipe 48 becomes a predetermined value Va, as shown in FIG. Replenishment valve 30
Is fully closed. Thus, the heating circuit B becomes a closed circuit.

Then, the times t ₁ and t ₂ from when the water pressure detected by the pressure sensor 36 decreases from the predetermined value Va to the value of Vb until it reaches the value of Vc are measured. , Comparing their times t ₁ , t ₂ with a reference time ts, for example,
was judged to be acceptable as no t ₁ ≧ ts if water leakage, it is determined that failure as there t ₂ <ts if water leakage.

Then, a controller (not shown) notifies the inspector of the success or failure by using a buzzer, a lamp, or the like.

[0083] Thus, it is possible to inspect the water leakage pipe heating circuit B over and out of the apparatus main body Z ₃ automatically.

Embodiment 4 FIG. 6 is a diagram showing a configuration of a heating device with a water heater according to Embodiment 4 of the present invention, and portions corresponding to Embodiment 3 shown in FIG. 5 are denoted by the same reference numerals. .

In the third embodiment, the cutoff valves 34 and 35 are provided before and after the pipe of the expansion tank 21 so that the water pressure at the time of the water leak inspection is not directly applied to the expansion tank 21. In 4, instead of omitting the valves 34 and 35, the expansion tank 21 is made pressure-resistant,
Further, an air vent valve 40 is provided in the overflow pipe 45. Furthermore, the pressure sensor 4 on the downstream side of the fitting 28b of the interior of the return side of the apparatus main body Z ₄ of the heating circuit B
1 is provided.

In the fourth embodiment, the above-mentioned rehydration valve 30,
The air vent valve 40 constitutes a closed circuit constructing means for the heating circuit B.

The other structure is the same as that of the third embodiment shown in FIG.
In this case, the detailed description is omitted.

Next, a description will be given of a procedure for performing a water leak test of the heating circuit B in the configuration shown in FIG.
In this case, control such as opening and closing of each valve is performed by a controller (not shown).

First, with the air vent valve 40 opened, the water refill valve 30 is opened, and then the heating circulation pump 31 is driven.
Thereby, the air in the piping of the heating circuit B is discharged outside from the expansion tank 21 via the overflow piping 45, and the piping of the circuit B is reliably filled with water.

If it is detected by the water level electrode 46 that no air remains in the expansion tank 21, the driving of the heating circulation pump 31 is stopped, and the air vent valve 40 and the water refill valve 30 are closed. .

When the water refill valve 30 is opened from this state, the water pressure of the tap water is applied to the inside of the heating circuit B via the water replenishment pipe 48 branched on the water inlet side of the hot water supply circuit A.

Then, after the excess pressure is released by the pressure safety valve 50 previously adjusted so that the water pressure detected by the pressure sensor 41 becomes the predetermined value Va, the water refill valve 30 is fully closed. Thus, the heating circuit B becomes a closed circuit.

Thereafter, based on the detection output of the pressure sensor 41, as shown in FIG. 3, it is determined whether the water leak has passed or failed, and the inspector is notified of that.

[0094] Thus, it is possible to inspect the water leakage heating circuit B over and out of the apparatus main body Z ₄ automatically.

The pressure sensor 41 is attached at a location
The present invention is not limited to the fourth embodiment.
₄ It can be attached to the internal heating circuit B as appropriate.

Embodiment 5 FIG. 7 is a diagram showing a configuration of a bath apparatus with a water heater according to Embodiment 5 of the present invention, in which parts corresponding to those of the conventional example shown in FIG.

In the fifth embodiment, when compared with the configuration of the conventional example shown in FIG. 8, the heating circuit B is not provided, and accordingly, the water supply pipe 48 is omitted, while the bath circuit C is device heat exchanger 70 for reheating in the middle of the body Z ₅ is provided.

In the fifth embodiment, the drop valve 2,
The adapter 4 constitutes a closed circuit constructing means for the bath circuit C.

The other configuration is the same as that of the conventional example shown in FIG. 8, and a detailed description is omitted.

Next, a description will be given of a procedure for performing a water leak test on the bath circuit C.

In this case, the pressure relief valve 5
With the adapter 4 with 7 attached, the drop valve 2 of the drop circuit D is opened. And the water quantity servo valve 1 of the hot water supply circuit A
Is gradually opened, the water pressure of the tap water passing through the hot water supply circuit A is applied to the bath circuit C via the drop circuit D. If the air in the pipe of the bath circuit C is discharged to the outside through the pressure relief valve 57, the pipe is reliably filled with water.

Then, as shown in FIG. 3, when the water pressure detected by the pressure sensor 5 reaches a predetermined value Va, both the water quantity servo valve 1 and the drop valve 2 are fully closed. Thereby, the bath circuit C becomes a closed circuit.

Thereafter, based on the detection output of the pressure sensor 5, as shown in FIG. 3, it is determined whether the water leak has passed or failed, and the inspector is notified of that.

[0104] Thus, it is possible to inspect the water leakage bath circuit C over and out of the apparatus main body Z ₅ automatically.

The following modifications can be made to each of the first to fifth embodiments.

In the first, second, fifth and fifth embodiments, the pressure sensor 5 for detecting the water level of the bath circuit C is also used for the water leak test when the water leak test of the bath circuit C is performed. Instead of detecting the pressure, a pressure gauge may be separately attached to the closed circuit to detect the water pressure.

In each of the first and second embodiments,
It is possible to perform a water leak test only for the heating circuit B or a water leak test only for the bath circuit C.

In each of the first to fifth embodiments, when the pressure of the heating circuit B or the bath circuit C is insufficient due to the water pressure of the water supply alone and a sufficient water leak test cannot be performed, the circulation pump 31 is used to apply the water pressure. , 3 can be driven to compensate for the lack of pressure.

The temperature of the hot and cold water in the pipe is raised by heating the heating heat exchanger 22, the heat exchanger 70 for reheating, the bath heater 24, or an electric heater for preventing freezing (not shown), and the internal pressure is increased by volume expansion. Can be raised.

In each of Embodiments 1 and 2 described above, the open / close state of the bath heat valve 32 of the heating circuit B at the time of the water leak inspection is not described, but the water in the heating circuit B including the inside of the apparatus main body is not described. To check for leaks, the bath heat valve 3
2 is preferably open, but may be closed.

In each of Embodiments 1 and 2 described above, the pressurization when performing the water leak test for only the heating circuit B is performed by attaching the adapter 4 shown in FIG. Instead, the heating circuit B may be pressurized by the dynamic pressure of the drop water flow.

In each of the first to fifth embodiments, the presence or absence of water leakage is checked based on the short time t ₁ and t ₂ required until the water pressure gradually decreases from the start of the water pressure detection to reach the reference value Vc. But not limited to this, for example, t ₁
It is also possible to determine the presence or absence of water leakage according to the degree of pressure drop during the period.

[0113]

According to the present invention, each device is constituted by a heating device for hot water heating, a bath device for filling a bath, reheating, and the like, and a heating device with a bath device combining these two devices. Since the water leak test can be performed independently of the heating circuit and the bath circuit, or both the circuits can be collectively and automatically performed, extra labor and time for the conventional test can be reduced as much as possible.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a heating device with a bath device according to a first embodiment of the present invention.

FIG. 2 is an explanatory view in a case where an adapter used for a water leak inspection of a bath circuit is attached to a circulation fitting of a bathtub.

FIG. 3 is an explanatory diagram of a case where a pass / fail judgment of a water leak test is performed.

FIG. 4 is a diagram showing a configuration of a heating device with a bath device according to Embodiment 2 of the present invention.

FIG. 5 is a diagram illustrating a configuration of a heating device according to a third embodiment of the present invention.

FIG. 6 is a diagram illustrating a configuration of a heating device according to a fourth embodiment of the present invention.

FIG. 7 is a diagram showing a configuration of a bath apparatus according to Embodiment 5 of the present invention.

FIG. 8 is a diagram showing a configuration of a conventional heating device with a bath device.

[Explanation of symbols]

Z ₁ to Z ₅ ... apparatus body, A ... hot water supply circuit, B ... heating circuit, C
... Bath circuit, D ... Dip circuit, 1 ... Water quantity servo valve, 2 ... Drop valve, 3 ... Bath circulation pump, 4 ... Adapter, 5.36,
38, 41: pressure sensor, 7: circulation fitting, 10: bathtub,
20: radiator, 21: expansion tank, 22: heating heat exchanger, 24: bath heater, 26a, 26b, 29a, 29b ...
External piping, 30 ... rehydration valve, 31 ... heating circulation pump, 3
4, 35 ... cutoff valve, 36 ... short circuit valve, 37 ... open / close valve, 4
5: overflow pipe, 48: water supply pipe, 52: short-circuit pipe, 53: branch pipe.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hideya Kotobuki 93, Edo-cho, Chuo-ku, Kobe, Hyogo Prefecture Inside (72) Inventor Yoshihiro Toko 93, Edo-cho, Chuo-ku, Kobe, Hyogo Prefecture Noritsu Co., Ltd. (72) Inventor Takeshi Aoki 93, Edo-cho, Chuo-ku, Kobe, Hyogo Prefecture Inside (72) Inventor Koji Kioio 93, Edocho, Chuo-ku, Chuo-ku, Kobe, Hyogo (72) Inventor Norishi (72) Inventor Hiroshi Ota 93 Noritsu, Edo-cho, Chuo-ku, Kobe, Hyogo Pref., Ltd. (72) Inventor Akihiro Yanada 93, Edocho, Chuo-ku, Kobe, Hyogo, Japan Kazutoshi Matsuda, inventor No. 72 in Noritsu Co., Ltd. 93 in Noritz Co., Ltd. (72) Inventor, Hisato Kataoka 93 in Edocho, Chuo-ku, Kobe City, Hyogo Prefecture 72) Inventor Eiichi Tsuji 93 Edocho, Chuo-ku, Kobe City, Hyogo Prefecture, Japan (72) Inventor Takayuki Tanaka 93 Edocho, Chuo-ku, Kobe City, Hyogo Prefecture, Noritsu Co., Ltd. −178200 (JP, A) Japanese Utility Model 5-64651 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24D 3/08 F24D 3/10

Claims (10)

(57) [Claims] 1. A heating circuit in which an expansion tank, a heating circulation pump, a heating heat exchanger, and various radiators for hot water heating are sequentially connected, and a water supply pipe for external water supply is connected to the heating circuit. And the heating circuit is exposed to the atmosphere.
Bath with closed circuit construction means to make a closed circuit that is not opened
In the heating device with the device, the closed circuit constructing means is provided in front of the expansion tank in the heating circuit.
A gate valve is placed in the middle of the rear heating circuit.
Do not have an expansion tank separated by a stop valve
That the rehydration pipe is connected to the heating circuit part
Heating system with bath equipment. 2. An expansion tank, a heating circulation pump, and heating heat exchange.
Heat exchanger and various radiators for hot water heating are connected in sequence.
And a heating circuit for external water replenishment.
A water pipe is connected, and the heating circuit is exposed to the atmosphere.
Bath with closed circuit construction means to make a closed circuit that is not opened
In the heating device with a device, the closed-circuit constructing means is configured to make the expansion tank pressure-resistant.
At the middle of the expansion tank overflow piping.
A heating device with a bath device, comprising an air vent valve . 3. Connected to various radiators for hot water heating
Comprising a heating circuit and a bath circuit connected to the bathtub,
Heating circuit, expansion tank, heating circulation pump, heating heat exchange
And a water supply pipe, and the bath
Circuit installed in bath circulation pump, bath heat exchanger, bathtub
Includes bath equipment with circulation fittings and drop piping
In the heating device, at least one of the heating circuit and the bath circuit is exposed to the atmosphere.
A heating device with a bath device , comprising a closed circuit constructing means for making a closed circuit that is not opened . 4. A heating device with a bath device according to claim 3.
The closed circuit constructing means short-circuits the heating circuit and the bath circuit.
Connected via tubing and cut off before and after the expansion tank in the heating circuit
Recirculation valve that arranges a valve and connects the bath circuit to the bathtub
A heating device with a bath device, characterized in that an adapter for short-circuit is attached to the fixture . 5. The heating device with a bath device according to claim 3,
In the above, the closed circuit constructing means is provided with a heater circuit before and after the radiator.
A gate valve is provided on each side and the return side, while the bath circuit
Is branched by a branch pipe, and the other end of the branch pipe is
Located outside the main body and separated by the double-ended valves
Bath equipment characterized by being connected to the heating circuit part
Heating system 6. A heating device with a bath device according to claim 1.
For in, closes the front and back of the edge cutting valve of the expansion tank, rehydration distribution
Open the rehydration valve provided in the middle of the pipe, and
Water leak inspection method characterized by applying water pressure to the heating circuit
Law. 7. The heating device with a bath device according to claim 2,
For in, closes the air vent valve of the overflow pipe, complement
Open the refill valve provided in the middle of the water pipe, and
Leak test characterized by applying water pressure to the heating circuit
Method. 8. The heating device with a bath device according to claim 4,
For, it closes the front and back of the edge cutting valve of the expansion tank, short circuit distribution
Open the short-circuit valve provided in the middle of the pipe,
Water pressure to the heating circuit via the channel and short circuit piping
A method for inspecting water leakage, characterized in that: 9. The heating device with a bath device according to claim 5 , wherein the gate valves on the outgoing side and the return side are closed together, and
Open the on-off valve in the middle of the branch piping, and branch piping from the bath circuit
A method for inspecting water leakage, comprising applying a water pressure to a heating circuit located outside the apparatus main body via the device . 10. The method according to claim 6, wherein:
In the described water leak inspection method, detection of water pressure in the circuit is started after a predetermined water pressure is applied,
Immediately after the start of water pressure detection
Shorter time required to reach or degree of pressure drop
A water leak inspection method characterized by determining whether or not there is a water leak according to the situation.