JPS6040578B2 - Bathtub water temperature compensation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that uses a small amount of energy to maintain a constant temperature of hot water in a bathtub once it has been heated to an appropriate temperature.

Generally used bath equipment that is equipped with a large external water heater to supply hot water requires large-scale piping equipment, and installation is difficult. This is difficult, and when the water temperature drops, it is necessary to discard some of the hot water in the bathtub and supply new hot water, which poses problems such as large energy losses.

There is also a device called a bath heater attached to the side of the bathtub that heats water indirectly, but it has poor thermal efficiency and has the disadvantage that the top of the water is hot and the bottom is lukewarm. The present invention aims to solve the problems of these conventional examples and to obtain a hot water temperature compensation device that is easy to install and has high energy efficiency by keeping the hot water temperature constant using a small-capacity auxiliary heater. An embodiment of the household bath system will be described in detail below with reference to the drawings.

In the figure, 1 is a bathtub, 2 is an outer pot connected to the bathtub through a pipe 3, and water supplied from a faucet 4 is boiled to an appropriate temperature by the outer pot 2 to produce hot water 5.

6 and 7 are circulation pipes connected to the bathtub 1, and a circulation pump 8 and an auxiliary heater 9 are installed in the middle, and the hot water 5 in the bathtub 1 is circulated through the circulation pipe 6, the circulation pump 8, the auxiliary heater 9, and the auxiliary heater 9. It is forced to circulate through pipe 7.

Note that a branch pipe 10 and valves 11 and 12 are provided between the circulation pump 8 and the auxiliary heater 9, and normally the valve 11 is open and the valve 12 is closed, but when the valve 11 is closed and the valve 12 is opened. When the bath time is over, the circulation pump 8 is arranged so that the remaining hot water, which is no longer needed after bathing, can be sent for other uses such as washing. This embodiment is constructed as described above, and the hot water 5 that has been boiled to an appropriate temperature in the outer pot 2, which is the main heater, is circulated by the circulation pump 8 and overflowed by the auxiliary heater 9. , it compensates for the natural cooling of the hot water 5 and operates to keep the water temperature constant.

Since it does not require a large amount of heat to compensate for the natural cooling of the hot water 5, the auxiliary heater 9 may be a gas or white kerosene combustion type or a small electric heating type, and the circulation pump 8 may be used as the auxiliary heater 9. Also, one with a capacity of 4 is sufficient. Note that the amount of heat released varies depending on conditions such as the temperature and the time from the start to the end of bathing, but this can be adjusted by adjusting the rotation speed of the circulation pump 8. In addition, the circulation pipes 6 and 7 may not be directly connected to the bathtub 1, but the ends of the pipes may simply be placed inside the bathtub 1, which makes the construction easier in the case of subsequent construction. Furthermore, the circulation pump 8 and the auxiliary heater 9 can be integrated or built into the bathtub 1, and a temperature sensor for the circulating temperature 5 can be provided to control the circulation pump 8 and the auxiliary heater 9. It's okay. The present invention provides a bathtub equipped with a main heater, a circulation pipe that circulates hot water between the bathtub and an auxiliary heater formed separately from the main heater, and a circulation pipe that circulates hot water between the bathtub and the auxiliary heater. An attached circulation pump is installed, so the auxiliary heater, which requires only a small amount of energy compared to the main heater, can be used to overflow hot water and raise the temperature of the water in the bathtub. This can be prevented with sufficient energy, and also with circulation pumps and auxiliary heat.
A branch pipe with a valve was installed on the circulation pipe between the heater and the auxiliary heater, and a valve was installed on the circulation pipe between the branch pipe and the auxiliary heater. By closing the door and operating the circulation pump, the hot water in the bathtub can be taken out from the branch pipe, and by using the circulation pump that prevents the hot water from cooling in this way, the remaining hot water in the bathtub can be used for washing, etc. It can be easily taken out without needing to be pumped out.

Furthermore, it can be easily installed in a bathtub that has already been installed as a post-construction work, and the bathtub can maintain a uniform temperature of the water in the bathtub during operation.
In addition, the circulation pump blows hot water from the bathtub, raises it, and sends it to the auxiliary heater, so the remaining hot water in the bathtub taken out from the branch pipe does not pass through the auxiliary heater, but directly from the bathtub to the circulation pump and the auxiliary heater. The remaining hot water can be taken out through the branch pipe to the outside, and the remaining hot water passes through the auxiliary heater with high heat exchange efficiency, eliminating the possibility that the remaining hot water will be cooled down in the auxiliary heater that cools naturally after heating is stopped. , the remaining hot water can be taken out and used for washing, etc., while maintaining the same temperature as the water in the bathtub.

[Brief explanation of the drawing]

The figure is a schematic configuration diagram showing one embodiment of the present invention, in which 1 is a bathtub, 2 is an outer pot, 5 is hot water, 8 is a circulation pump, 9 is an auxiliary heater, 6 and 7 are circulation pipes, and 10G branch pipes. ,1
1 is a valve provided on the circulation pipe, and 12 is a valve provided on the branch pipe.

Claims (1)

[Claims] 1 A bathtub equipped with a main heater has a circulation pipe that circulates hot water between the bathtub and an auxiliary heater formed separately from the main heater, and a circulation pipe that circulates hot water between the bathtub and the auxiliary heater. A circulation pump that blows up water from the bathtub and sends it to the heater, a branch pipe connected to the circulation pipe and equipped with a valve between the circulation pump and the auxiliary heater, and a branch pipe installed in the circulation pipe between the branch pipe and the auxiliary heater. A hot water temperature compensation device for a bathtub, characterized in that it is provided with a circulation device consisting of a valve and a valve.