JPH06109323A - Bath additional heating device with automatic bath function - Google Patents

Abstract

PURPOSE:To contrive the cost-down of the whole of a system and reduce running cost of the same. CONSTITUTION:A bath additional heating device with automatic bath function is constituted of hot-water supplying means 20, 12, utilizing the waste heat of a factory and the like to provide first and second supplying hot-water, a mixing means 5, mixing the second supplying hot-water with water to provide bathtub water having a predetermined temperature, and an additional heating means 3, effecting the additional heating of the bathtub water through heat exchange between the first supplying hot-water and the bathtub water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath reheating device with an automatic bath function, and more particularly to the provision of bath water using hot water for district heating and cooling systems that utilize factory exhaust heat, and the addition of bath water. The present invention relates to a hot-water reheating device with an automatic bath function, in which heating is performed, the device is simplified and the cost is reduced, and the running cost is reduced.

[0002]

2. Description of the Related Art FIG. 4 shows the structure of a conventional bath reheating device with an automatic bath function. The bath reheating device with an automatic bath function includes a heat medium pipe 10 for supplying hot water of about 80 ° C. obtained by a boiler, a water supply pipe 11 for supplying water such as tap water, and hot water supply of the heat medium pipe 10. A hot water supply heat exchanger 2 for providing bathtub water by exchanging heat between the water and the water supply of the water supply pipe 11;
Mixing valve 5 for mixing the bath water and the water supplied from the water supply pipe 11 to obtain bath water having a predetermined temperature (appropriate temperature), and reheating the bath water by heat exchange between the hot water of the heat medium pipe 10 and the bath water of the bath 13. It is composed of a heat exchanger 3 for additional heating.

The heat transfer medium pipe 10 is divided into two systems so as to supply hot water to the hot water supply heat exchanger 2 and the additional heating heat exchanger 3, and the two heat transfer medium pipes 10 are both heat transfer media. On-off valve 4a,
4b is provided, and the supply of hot water is controlled by opening and closing.

The hot water supply heat exchanger 2 is constructed by thermally connecting a heat medium pipe 10 and a water supply pipe 11.

The mixing valve 5 has a supply pipe 14 connected to the bath 13 and supplies bath water to the bath 13 from there. The supply pipe 14 has a pouring valve 6 and two check valves 7a and 7b arranged before and after the pouring valve 6.

The reheating heat exchanger 3 includes a reheating tube 8 and a heat medium tube 1.
0 is thermally connected, and the reheating pipe 8 has a reheating pump 9 for circulating bath water and a check valve 7c for preventing backflow from the supply pipe 14.

In the above structure, when pouring bath water into the bath 13, the pouring valve 6 is first opened. Then, in the hot water supply heat exchanger 2, the hot water of the heat medium pipe 10 and the water supply pipe 1
Bath water is obtained by heat exchange of the feed water of No. 1, and this bath water is mixed with the feed water of the water supply pipe 11 by the mixing valve 5 to a predetermined temperature (appropriate temperature).
It is performed by supplying it to the bathtub 13 via the. on the other hand,
When the bath water in the bathtub 13 is reheated, the reheating pump 9 is operated to circulate the bath water through the reheating tube 8 to the bathtub 13 and the heat exchanger 3 for reheating to heat the water for heating. This is performed by exchanging heat between the bath water and the hot water supplied to the heat medium pipe 10 in the exchanger 3.

[0008]

However, according to the conventional bath reheating device with automatic bath function, the hot water supply heat exchanger or the hot water supplied to the reheating heat exchanger is obtained from a heating means such as a boiler. Therefore, there is a problem that the cost of the entire system is increased and running cost such as fuel cost becomes large. For this reason, it has been considered to use hot water of about 60 ° C made by using factory waste heat, heat pump, etc. in an apartment house that uses a district heating and cooling system. About 8 from the ability problem of
Hot water of 0 ° C. is required, which is difficult to put into practical use.

Therefore, an object of the present invention is to use hot water supply for a district heating and cooling system or the like that uses waste heat from a factory to reduce the cost of the entire system and a running bath with an automatic bath function. It is to provide an additional heating device.

[0010]

In view of the above problems, the present invention aims to reduce the cost of the entire system and to reduce the running cost by using factory exhaust heat or the like to supply the first and second hot water. Hot water supply means for supplying water, mixing means for mixing the second hot water supply water and water supply water to provide bath water at a predetermined temperature, and additional heating of the bath water by heat exchange between the first hot water supply and the bath water. A bath reheating device with a bath automatic function equipped with a reheating means for performing.

The reheating means has a leak detecting groove in the inner wall, is provided on the inner pipe through which the first hot water is passed, and the outer periphery of the inner pipe, and passes the bath water between the inner pipe and the inner pipe. The heat exchange may be performed by a double tube including an outer tube.

The above-mentioned mixing means is the first hot water supply source.
The bath water may be provided by using the hot water supply.

[0013]

According to the bath reheating device with an automatic bath function of the present invention having the above-mentioned configuration, the hot water supply means for providing the first and second hot water supplies uses factory exhaust heat or the like used in a district heating and cooling system or the like. Therefore, it is not necessary to separately prepare hot water for hot water supply by a boiler or the like. Therefore, it is possible to simplify the system of the entire apparatus and reduce costs, and to reduce running costs such as fuel costs.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bath reheating device with an automatic bath function according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows the configuration of a bath reheating device with an automatic bath function according to an embodiment of the present invention. This bath reheating device with an automatic bath function includes a heating medium pipe 20 for supplying hot water supplied by using factory exhaust heat, a hot water supply pipe 12, and a water supply pipe 11 for supplying water such as tap water. Mixing valve 5 that mixes the hot water of hot water supply pipe 12 with the hot water to provide bath water at a predetermined temperature, and heat exchange of hot water of heat transfer pipe 20 and bath water of bath 13 to reheat the bath water. It is composed of a heat exchanger 3 for additional heating.

The heat medium pipe 20 has a heat medium opening / closing valve 4 and controls the supply of hot water by opening and closing the valve.

The mixing valve 5 has a supply pipe 14 connected to the bath 13 and supplies bath water to the bath 13 from here. The supply pipe 14 has a pouring valve 6 and two check valves 7a and 7b arranged before and after the pouring valve 6.

The reheating heat exchanger 3 includes a reheating tube 8 and a heat medium tube 2.
0 is thermally connected, and the reheating pipe 8 has a reheating pump 9 for circulating bath water and a check valve 7c for preventing backflow from the supply pipe 14.

In the above construction, when pouring the molten metal into the bathtub 13, first, the pouring valve 6 is opened. Then, the hot water of the hot water supply pipe 12 and the water of the hot water supply pipe 11 are mixed by the mixing valve 5 to supply the bath water at a predetermined temperature (appropriate temperature) to the bathtub 13 via the supply pipe 14. On the other hand, when the bath water in the bathtub 13 is reheated, the reheating pump 9 is operated to circulate the bath water between the bathtub 13 and the reheating heat exchanger 3 via the reheating tube 8. The heat is exchanged between the bath water and the hot water for the heat medium pipe 20 by the heat exchanger 3 for additional heating.

The above-described bath reheating device with an automatic bath function uses the factory exhaust heat as the hot water for the bath water of the bath 13 and the hot water for the heating medium for reheating the bath water. Since hot water for district heating and cooling systems is used, there is no need to separately create hot water by a boiler or the like. For this reason, the system of the entire apparatus can be simplified to reduce the cost, and the running cost such as the fuel cost can be reduced.

FIG. 2 shows a bath reheating device with a bath automatic function according to a second embodiment of the present invention. In this embodiment, the hot water supply pipe 12 is branched from the heat medium pipe 20 inside the apparatus, and the hot water supply water of the heat medium pipe 20 is supplied to the heat exchanger 3 for additional heating and the bathtub 13 as the bath water. Therefore, it is possible to further simplify the structure as compared with the first embodiment. Generally, when the present invention is used in a high-rise house or the like, the pressure of the heat medium is about 10 Kg / cm ^{2 at} maximum,
Although it cannot be integrated with the hot water supply circuit through the pressure reducing valve, this embodiment can be applied when the pressure of the heat medium is about the same as the pressure of the hot water in a low-rise house.

FIG. 3 shows a third embodiment of the present invention, in which a double tube heat exchanger is used as the heat exchanger 3 for additional heating. This double pipe heat exchanger has a leak detecting groove 17 in the inner wall thereof, and an inner pipe 16 for passing hot water and an inner pipe 1
The outer pipe 15 is provided on the outer periphery of the outer pipe 6 and has an inner pipe 16 for passing bath water. When hot water is used as the primary water (heat medium) for the heat exchanger 3 for heating, if the heat exchange surface of the heat exchanger 3 for heating has holes due to corrosion or the like, hot water and bath water Although there is a risk of mixing, if this double pipe heat exchanger is applied, the hot water supply and bath water will not mix, and the leak detection groove 17 is connected to the leak detection means at the pipe terminal. This makes it possible to easily identify leakage due to corrosion of the pipe wall.

[0023]

As described above, the hot water supply means for providing the first and second hot water supply water by utilizing the waste heat of the factory, and the second hot water supply means.
The mixing means for mixing the hot water and the hot water to provide the bath water of a predetermined temperature, and the first heating water and the heating means for heating the bath water by heat exchange of the bath water are provided. It is possible to simplify the system of the entire apparatus, reduce costs, and reduce running costs.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a second embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a third embodiment of the present invention.

FIG. 4 is an explanatory view showing a conventional bath reheating device with an automatic bath function.

[Explanation of symbols]

1 Bath reheating device with automatic bath function 2 Heat exchanger for hot water supply 3 Heat exchanger for reheating 4 Heat medium opening / closing valve 5 Mixing valve 6 Pouring valve 7 Check valve 8 Reheating pipe 9 Reheating pump 10 Heat transfer pipe 11 Water Supply Pipe 12 Hot Water Supply Pipe 13 Bathtub 14 Supply Pipe 15 Outer Pipe 16 Inner Pipe 17 Leak Detection Groove 20 Heat Transfer Pipe

Claims (3)

[Claims] 1. A hot-water supply means for providing first and second hot-water supply water by utilizing waste heat from a factory, and a mixing for mixing the second hot-water supply water and the hot-water supply water to provide bath water at a predetermined temperature. A bath reheating device with a bath automatic function, comprising: means and a reheating means for reheating the bath water by heat exchange of the first hot water and the bath water. 2. The reheating means has a leak detecting groove in an inner wall thereof, and is provided between an inner pipe through which the first hot water is passed and an outer periphery of the inner pipe, and between the inner pipe and the inner pipe. The bath reheating device with a bath automatic function according to claim 1, wherein heat exchange is performed by a double pipe made of an outer pipe through which the bath water passes. 3. The configuration in which the mixing means provides the bath water by using the first hot water supplied by branching from a pipe for supplying the first hot water as the second hot water. A bath reheating device with an automatic bath function according to claim 1.