JPS6041191Y2 - bathtub - Google Patents

Description

[Detailed explanation of the idea] This proposal concerns the improvement of bathtubs.

The hot water that remains after use in small bathtubs installed in ordinary homes is often thrown away while retaining a considerable amount of heat, and new bath water is heated by injecting cold water from the tap. Common.

If such a method is adopted, hot water, which is effective in preserving thermal energy, is discarded, and that thermal energy is wasted without being recovered, so it is extremely uneconomical and also requires a lot of energy to heat a bath from cold water. It takes a long time.

This proposal was devised in view of the above points, and it is an appropriate bathtub that can effectively utilize thermal energy by recovering as much of the heat retained in the hot water in the bathtub as possible into the bath water used next time. This is what we are trying to provide.

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes an inner tank, which is similar to well-known bathtubs, and is filled with bath water and heated to produce hot water.

2 is an outer tank arranged outside the inner tank 1, and the opening edge 4 of the inner tank 1
is extended and connected to the outer tank opening edge 5 to form a sealed chamber 3 surrounding the inner tank 1.

In order to stabilize the inner tank 1 within the outer tank 2, a retaining member is provided at an appropriate location between the two tanks.

Reference numeral 6 denotes a bottom stopper for transfer provided at the bottom of the inner tank 1, and by opening this, the bath water in the inner tank 1 flows into the chamber 3.

7 is a pump, and the pump 7 can be brought in as shown in FIG. 1 and its vibrator 8 can be connected to the water inlet 9 provided at the top of the inner tank 1, or the pump 7 can be installed inside the chamber 3 as shown in FIG. The hot water in the inner tank can be forcibly transferred into the chamber 3 through the discharge pipe 8'.

In addition, in the figure, 10 is a water faucet, 11 is provided at the bottom of the inner tank,
An external drainage bottom plug is used to directly discharge bath water to the outside of the outer tank. Reference numeral 12 indicates a bottom plug for draining water from the chamber 3 provided in the outer tank 2.

In the present invention having the above configuration, the used hot water after bathing is first removed from the bottom plug 6 for transfer, and then transferred to the chamber 3.

Next, when the hot water level in the chamber 3 becomes the same as the water level in the inner tank 1, the bottom plug 6 is closed, and the remaining warm water in the inner tank 1 is forcibly transferred to the chamber 3 using the pump 7. After emptying 1,
Bath water to be used next time is poured into the inner tank 1 from a faucet 10.

If this is done, the heat from the hot water in the room 3 will move to the cold bath water in the inner tank 1 over time.

Therefore, when the next bath is heated, the cold hot water in the chamber 3 is discharged, and the heated bath water in the inner tank 1 is heated to the required temperature and used.

As explained above, according to the present proposal, a chamber is provided between the inner tank and the outer tank, and used hot water is transferred from the inner tank into the room, and fresh bath water is poured into the inner tank. Since this is configured to be preheated using the heat of indoor hot water, the heat contained in the used hot water, which is normally thrown away without being used, can be recovered, making it extremely effective in terms of thermal energy utilization. It also has practical effects such as shortening the time it takes to heat the next bath.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of the present invention, and FIG. 2 is a schematic sectional view showing another embodiment. 1...Inner tank, 2...Outer tank, 3...
...Chamber, 4...Inner tank opening edge, 5...Outer tank opening edge, 6...Bottom plug for transfer, 7...
Pump, 8...Pipe, 9...Inlet, 10...Faucet, 11...Drain bottom plug, 12...Outside Tank bottom plug.

Claims (1)

[Scope of utility model registration request] A bathtub characterized in that a chamber is provided between an inner tank and an outer tank, and a hot water transfer means is provided to enable hot water in the inner tank to be poured into the chamber.