JP3087608B2 - Bath kettle equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention uses a single burner for two circuits, a reheating circuit for reheating and heating bathtub water and a hot water supply circuit for heating and supplying hot water from a water supply system. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath kettle device provided with a one-can, two-circuit heat exchange can for heating and exchanging heat.

[0002]

2. Description of the Related Art Conventionally, a hot water supply channel for supplying general hot water and a reheating circuit for reheating a bath are led to one heat exchange can body, and a single burner is used for heat exchange heating. There is provided a bath kettle device provided with the above-described one-can-two-circuit heat exchange can body.

[0003]

SUMMARY OF THE INVENTION However, the above-mentioned prior art 1
In the case of a two-circuit type bath kettle device, when the hot water supply is operated independently, the dual-purpose burner is operated. There is a problem that the water vapor is discharged into the bathtub.

Accordingly, the present invention solves the above-mentioned problems of the conventional bath-tank apparatus, and has a one-can-two-circuit-type heat exchange can body for heating by using both a reheating circuit and a hot water supply path. It is an object of the present invention to provide a bath kettle device capable of preventing steam from being carried into a bathtub even when steam is generated in a reheating circuit by a hot water hot water supply alone operation.

[0005]

In order to achieve the above-mentioned object, a bath kettle apparatus of the present invention comprises a circulation forward path for conveying bath water from a bathtub to a heat exchange can body and a bathtub heated from the heat exchange can body to the bathtub. A two-circuit two-cylinder system that heats and exchanges heat by using a single burner for two circuits, a reheating circuit for returning water and a hot water supply path for heating and supplying hot water from the water supply system. A first feature of a bath kettle device provided with a heat exchange can body is that a U-shaped tubular falling portion is provided in the middle of the circulation return path. Further, in addition to the first feature, the bath kettle device of the present invention branches one drain pipe having a common drain plug into a lower end portion of a U-shaped tubular falling portion of the return circulation path and a circulation forward path. The second feature is that the connection is made.

[0006]

According to the first feature of the present invention, when the hot-water / hot-water supply operation is performed alone, the reheating circuit which is not in operation is also heated by the burner at a portion passing through the heat exchange can. Therefore, residual water in the reheating circuit is boiled in the heat exchange vessel, expands as steam, and is transported to the bathtub side on the return path of the reheating circuit. Since the portion is provided, it becomes difficult for light water vapor to enter the bathtub side beyond the falling portion.
In addition, the water remaining in the falling portion of the U-shaped tube liquefies the water vapor, and is prevented from entering the bathtub side beyond the falling portion. In addition, since there is a circulation pump or the like in the circulation outward path, intrusion of water vapor is prevented. The second aspect of the present invention
According to the feature of the above, in addition to the operation of the first feature,
Since one drain pipe with a common drain plug is branched and connected to the lower end of the U-shaped tubular falling part of the circulation return path and the circulation forward path, residual water in the circulation return path and the heat exchange can is removed. The water can be easily drained using the U-shaped tubular falling part. Further, the residual water in both the circulation forward path and the circulation return path and in the heat exchange can can be drained by one common drain plug.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments.
FIG. 1 is a cross-sectional configuration diagram showing an embodiment of a bath kettle device according to the present invention.

[0008] A one-can, two-circuit type heat exchange can 20 is disposed in the outer case 10, and the heat exchange can 20 has one burner.
30 are installed. A bathtub to the heat exchange can 20
A reheating circuit 50 is led from 40, and a hot water supply channel 60 is led from the water supply system. The reheating circuit 50 is a bathtub 40
A circulation outgoing path 51 for sending bathtub water from the heat exchange can 20 to the heat exchange can body 20, and a circulation return path 52 for sending bathtub water heated by the heat exchange can body 20 to the bathtub 40.
A circulation pump 53 is provided in the circulation outward path 51. The bathtub 40 is provided with a circulation fitting 41 for the reheating circuit 50, and the outer case 10 is provided with a connection fitting 11 for connecting piping inside and outside the outer case 10 of the reheating circuit 50.

The circulation return path 52 of the reheating circuit 50 includes an internal circulation return path 52a piped in the outer case 10.
And an external circulation return route 52b which is provided outside the outer case 10 and is connected to the bathtub 40.
A tubular falling portion 54 is provided. Since the U-shaped tubular falling portion 54 is provided in the outer case 10, it does not stand out from the outside. A drain pipe 71 having a common drain plug 70 is branched into branch drain pipes 71a.
And 71b, which are connected to the lower end of the U-shaped tubular falling portion 54 and the circulation outward path 51.

When the hot water supply operation is performed alone in the bath water heater having the above-described configuration, the burner 30 of the heat exchange can 20 burns, and water from the water supply is supplied to the hot water supply passage 60.
Is supplied to the heat exchange can body 20 through the heater, and is instantaneously heated and supplied with hot water. In this case, reheating operation is suspended,
The circulation pump 53 is stopped, and the water remaining in the reheating circuit 50 is in a non-flowing state. Therefore, the residual water in the portion of the reheating circuit 50 that passes through the heat exchange can 20 is heated and boiled by the burner, expands as steam, and is transported to the recirculation path 52 of the reheating circuit 50 to the bathtub 40 side. Will be. However, since the U-shaped tubular falling part 54 is provided in the middle of the circulation return path 52, it becomes difficult for light steam to enter the bathtub 40 side beyond the falling part 54.
Further, water vapor is liquefied by the water remaining in the U-shaped tubular falling portion 54, and the water vapor is liquefied.
Intrusion to the side is prevented.

[0011]

According to the present invention, there is provided the above construction.
According to the bath kettle device described in (1), a bath kettle provided with a one-can-two-circuit-type heat exchange can body for performing heat exchange heating by using two circuits of a reheating circuit and a hot water supply path by one burner In the apparatus, since the U-shaped tubular falling portion is provided in the middle of the circulation return path, even when steam is generated in the reheating circuit by the hot water hot water supply alone operation, the steam is carried over into the bathtub. Can be reliably prevented. According to the bath kettle device of the second aspect, in addition to the effect of the configuration of the first aspect, one drain pipe having a common drain plug is provided with a U-shaped tubular fall of the circulation return path. Since it is branched and connected to the lower end of the section and the circulation forward path, residual water in the circulation return path and the heat exchange can can be easily drained using the U-shaped tubular fall section. Further, the residual water in both the circulation forward path and the circulation return path and in the heat exchange can can be drained by one common drain plug.

[Brief description of the drawings]

FIG. 1 is a sectional configuration view showing an embodiment of a bath kettle device according to the present invention.

[Explanation of symbols]

 20 Heat exchange canister 30 Burner 40 Bathtub 50 Reheating circuit 51 Circulating outward path 52 Circulating return path 54 Falling part 60 Hot water supply path 70 Drain tap 71 Drain pipe

Claims (2)

(57) [Claims] 1. A reheating circuit comprising: a circulation forward path for conveying bathtub water from a bathtub to a heat exchange can body; a circulation return path for returning heated bathtub water from the heat exchange can body to the bathtub; A bath-tank device provided with a one-can-two-circuit heat exchange can body for performing heat exchange and heating by using two circuits for a hot water supply path for heating and supplying hot water with a single burner. A bath kettle device provided with a U-shaped tubular falling part. 2. A drain pipe having a common drain plug,
The bath kettle device according to claim 1, wherein a lower end portion of a U-shaped tubular falling portion of the circulation return path is branched and connected to a circulation forward path.