JP2917582B2 - Automatic hot water bath equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic hot-water supply bath apparatus capable of supplying hot water to a kitchen, a lavatory, and the like, and a hot-water bath.

[0002]

2. Description of the Related Art As shown in FIG. 2, a conventional automatic hot water supply bath apparatus includes a hot water supply circuit 41, a bath circulation circuit 42, and a dropping circuit 43.

[0003] A hot water supply circuit 41 heats water from a tap water in a hot water supply heat exchanger 44 to supply hot water to a curan 45 in a kitchen or a lavatory, or drops and supplies hot water to a bathtub 46 through a dropping circuit 43 and a bath circulation circuit 42. In the middle of the circuit, an incoming water temperature sensor 47 composed of a thermistor,
A hot water supply sensor 48, a hot water temperature sensor 49, and a hot water servo valve 50 are provided. Reference numeral 60 denotes a bypass valve.

A bath circulation circuit 42 forcibly circulates hot and cold water in a bath tub 46 by a pump 51 and heats the circulating bath water in a bath heat exchanger 52. In the middle of the circuit, a running water switch 53 and a pressure A water level sensor 54 composed of a switch and a bath temperature sensor 55 are provided.

The drop circuit 43 branches off from the hot water supply circuit 41 and is connected to the bath circulation circuit 42, and supplies hot water from the hot water supply circuit 41 to the bath circulation circuit 42 in a state where backflow from the bath circulation circuit 42 is prevented. A drop water amount sensor 56, a drop solenoid valve 57, a vacuum breaker 58, and two-stage check valves 59, 59 are provided.

In the above arrangement, when hot water is supplied to the bathtub 46, the hot water boiled in the hot water supply circuit 41 is supplied to the bathtub 46 through the dropping circuit 43 and a part of the bath circulation circuit 42. When reheating, use pump 5
By the drive of 1, the bathtub water circulates in the bath circulation circuit 42, and is heated by the bath heat exchanger 52 during that time.

[0007]

By the way, in the conventional automatic hot water supply bath apparatus, as described above, the hot water supply circuit 41 is provided.
The boiled water is dropped into the bathtub 46. If another plug such as a kitchen curan 45 is used at the same time as the bathtub 46 is filled, the hot water is supplied to the other bathtub.
There is a problem that the amount of hot water dropped into the furnace is extremely reduced, and it takes a long time to fill the hot water.

Further, in the conventional apparatus, when cold water is supplied to the bathtub 46 in order to lower the temperature of the bathtub water to a lubricating temperature or the like, the cold water is dropped into the bathtub 46 from the hot water supply circuit 41. When the hot water supply heat exchanger 44 is in use and hot water is being supplied to the other tap by operating the hot water supply heat exchanger 44, the hot water supply to the other tap takes precedence. During that time, the cold water cannot be dropped into the bathtub 46 and supplied. When the supply of hot water to the tub 46 is completed, the cold water can be dropped into the bathtub 46. Therefore,
During use of the other stopper, the water supply to the bathtub 46 cannot be freely performed.
There is a problem.

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and has as its object to provide an apparatus capable of filling a bathtub and refilling water without hindrance while using another plug. I do.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a hot water supply circuit, a bath circulation circuit capable of circulating and heating bath water, and a branch from the hot water supply circuit, which is connected to the bath circulation circuit. An automatic hot water supply bath apparatus having a dropping circuit, comprising a shutoff valve and a feedwater dropping circuit, wherein the shutoff valve is provided in the middle of a bath circulation circuit, and is connected to a water inlet side of the bath heat exchanger and a dropping circuit. The water supply drop-in circuit branches off from the water inlet side of the hot water supply circuit and is connected to the bath circulation circuit on the bath heat exchanger side from the shutoff valve.

[0011]

In the above configuration, when the bath tub is filled with hot water and the other hot water is supplied simultaneously, the shut-off operation of the shut-off valve causes the bath circulation circuit to change a portion closer to the bath heat exchanger than the shut-off valve and the shut-off valve. On the other side, and a portion including a connection portion with a drop circuit. Then, to the part on the side of the bath heat exchanger, tap water is dropped and supplied through a feed water drop circuit, and the supplied water is heated by the bath heat exchanger and supplied to the bathtub. At the same time, a part of the hot water boiled in the hot water supply circuit is dropped and supplied to the bathtub through the drop circuit and the other part of the bath circulation circuit. When water is supplied to the bathtub, the water dropped through the water supply dropping circuit may be directly supplied to the bathtub.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to an embodiment shown in FIG. FIG. 1 is a circuit diagram of an automatic hot water supply bath apparatus according to one embodiment of the present invention.

As shown in FIG. 1, an automatic hot water supply bath apparatus of this embodiment basically comprises a hot water supply circuit 1 and a bath circulation circuit 2.
And a drop-in circuit 3 are the same as in the above-mentioned conventional example.

The hot water supply circuit 1 includes a water supply pipe 4 connected to the water supply, a water supply temperature sensor 5, a hot water supply amount sensor 6,
Hot water supply heat exchanger 7, hot water temperature sensor 8, hot water servo valve 9, and hot water pipe 1 connected to callan 10 such as a kitchen or a washroom.
1 and a point that a bypass valve 12 is provided. In this hot water supply circuit 1, the burner is proportionally controlled to vary the amount of combustion and set the outlet temperature.

The bath circulation circuit 2 includes a suction pipe 14 and a discharge pipe 15 connected to the bathtub 13, a suction pump 16, a running water switch 17, and a water level sensor 18
Also, a point provided with a bath heat exchanger 19 and a bath temperature sensor 20 is the same as the conventional example. The bath circulation circuit 2 sets the outlet temperature by varying the amount of water entering the bath heat exchanger 19 because the burner is turned on and off to keep the amount of combustion constant.
The amount of water entering the bath circulation circuit 2 depends on the set temperature and
It is determined by setting the opening of the servo valve 27 of the water supply dropping circuit 26 described below based on the temperature of incoming water to the bath circulation circuit 2 and the temperature of hot water detected by the bath temperature sensor 20.

Further, the dropping circuit 3 branches off from the downstream portion of the hot water supply servo valve 9 of the hot water supply circuit 1 and is connected to the discharge side of the pump 16 of the bath circulation circuit 2, so that a dropping water amount sensor 21 and a dropping electromagnetic sensor are provided. A valve 22;
The point that a vacuum breaker 23 and a check valve 24 are provided is the same as the conventional example.

The difference between the apparatus of this embodiment and the conventional example is that
The shutoff solenoid valve 25 is provided in the bath circulation circuit 2, and a water supply dropping circuit 26 is provided between the water inlet side of the hot water supply circuit 1 and the bath circulation circuit 2.

The shutoff solenoid valve 25 is provided in the bath circulation circuit 2 on the side of the bath heat exchanger 19 with respect to the connection point of the drop-in circuit 3 to connect the bath circulation circuit 2 to the bath heat exchanger 19 side. And a portion on the pump 16 side. The water supply dropping circuit 26 branches from the water inlet pipe 4 of the hot water supply circuit 1 and connects to the bath circulation circuit 2 on the side of the bath heat exchanger 19 from the shutoff electromagnetic valve 25, and includes a servo valve 27, a water amount sensor 28, and the like. , Solenoid valve 29
, A vacuum breaker 30, and two-stage check valves 31, 3
1 is provided.

In the above configuration, when hot water is supplied to the bathtub 13 without using another plug such as the currant 10, the hot water boiled in the hot water supply circuit 1 is supplied to the dropping circuit 3 in the same manner as in the conventional apparatus.
When the water is dropped into the bathtub 13 and supplied through a part of the bath circulation circuit 2 to reheat the bathtub water, the pump 1
The bathtub water is circulated in the bath circulation circuit 2 by the drive of 6, and is heated by the bath heat exchanger 19 during that time. If other taps are used at the same time, the operation is as follows.

First, when hot water is filled in the bathtub 13 and hot water is supplied to the other tap at the same time, the shutoff solenoid valve 25 is turned off, whereby the bath circulation circuit 2 is turned on by the bath heat exchanger 19.
Side part and a part on the pump 16 side. Then, the water of the tap water is dropped and supplied to the portion on the side of the bath heat exchanger 19 through the feed water drop circuit 26. The supplied water is heated by the bath heat exchanger 19 and then supplied to the bathtub 13.
Supplied to On the other hand, most of the hot water boiled in the hot water supply circuit 1 is supplied to the curran 10, but other hot water flows from the dropping circuit 3 into the part of the bath circulation circuit 2 on the pump 16 side, and Is supplied to the bathtub 13 by being dropped. Therefore, the bath circuit 13 is provided with the bath circulation circuit 2.
Hot water will be supplied simultaneously from the two paths of the part on the side of the bath heat exchanger 19 and the part on the side of the pump 16, and the amount of hot water dropped into the bathtub 13 will be approximately the same as when no other tap is used. Will be kept.

When water is supplied to the bathtub 13 at the same time as hot water is supplied to the other tap, the water dropped into the bath circulation circuit 2 through the water supply dropping circuit 26 is supplied as it is to the bathtub 1.
3 and it is not necessary to wait until the use of the other stopper is completed.

[0022]

As described above, according to the present invention, a water supply path from the water inlet side of the hot water supply circuit to the heat exchanger side of the bath circulation circuit is appropriately formed. A large amount of hot and cold water can be dropped and supplied, and hot water filling and water refilling can be performed without any trouble while using other plugs.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of an automatic hot water supply bath apparatus according to one embodiment of the present invention.

FIG. 2 is a circuit diagram of a conventional automatic hot water supply bath apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hot-water supply circuit 2 Bath circulation circuit 3 Drop-down circuit 19 Bath heat exchanger 25 Solenoid valve for shut-off (cut-off valve) 26 Drop-in water supply circuit

Claims (1)

(57) [Claims] 1. An automatic hot water supply bath apparatus comprising a hot water supply circuit, a bath circulation circuit capable of circulating and heating bath water, and a drop-off circuit branched from the hot water supply circuit and connected to the bath circulation circuit. A drop-off circuit, and the shut-off valve is provided in the middle of the bath circulation circuit, and can cut off and separate a water inlet side of the bath heat exchanger and a connection point of the drop-down circuit. An automatic hot water supply bath device, which branches off from the water inlet side of the hot water supply circuit and connects to the bath circulation circuit on the bath heat exchanger side from the shutoff valve.