JPH0240434Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an automatic hot water supply device used for supplying hot water to bathtubs.

<Prior art and its problems> In the conventional automatic water heater for bathtubs, the hot water heated by the automatic water heater is dropped into the hopper through the automatic hot water supply pipe, and then is sent into the bathtub via the circulation fitting. Since the hot water that has accumulated in the bathtub is only sent to the hopper, the hot water that has accumulated in the bathtub is rapidly dropped for a small amount of time, but as the hot water increases, the head difference decreases and the hot water is dropped into the hopper. There is a problem where the hot water overflows from the top of the hopper before it has completely entered the bathtub.

Therefore, the present invention solves the drawbacks of the above-mentioned conventional technology,
To provide an automatic hot water supply device for a bathtub capable of quickly and completely feeding hot water from an automatic water heater into a bathtub without causing the hot water to overflow from a hopper and regardless of a decrease in the head difference.

<Means for Solving the Problems> The means for achieving the above object will be described with reference to FIG. The automatic hot water supply device for a bathtub is configured to send hot water dropped into the bathtub A into the bathtub A through a circulation fitting 4 constituting a hot water entrance/exit chamber R projecting from the side wall of the bathtub A. An inlet 4a for hot water from the hopper 3 is provided in the upper part of the circulation fitting 4, and the bathtub A
The inlet 4b to the circulation fitting 4 in the circulation paths 5 and 7 for circulating hot water from the hot water through the circulation pump 6 to the bathtub A again is located near the inlet 4a from the hopper 3 to the circulation fitting 4 on the side. It is characterized in that the hot water flowing from the hopper 3 into the circulation fitting 4 is sent into the bathtub A together with the force of the hot water flowing into the circulation fitting 4 from the circulation path 7.

<Operation> Hot water from the automatic water heater 1 is sent into the bathtub A via the automatic hot water supply pipe 2, hopper 3, and circulation fitting 4. If the circulation pump 6 is activated when the water level in the bathtub A reaches above the top of the circulation fitting 4, the hot water in the bathtub A passes through the circulation path 5 to the circulation pump 6, and further reaches the circulation path 7. Circulation fitting 4 through
flow inside. By providing another inlet 4b in the vicinity of the inlet 4a,
In the entrance/exit chamber R constituted by the circulation fitting 4, the hot water flowing in from the inlet 4b flows through the inlet 4a.
Remove the hot water from the bathtub in the direction of bathtub A. As a result, the hot water in the hopper 3 quickly decreases, and there is no possibility that the hot water dropped from the automatic hot water supply pipe 2 will overflow from the hopper 3.

<Example> The automatic hot water supply device for a bathtub according to the present invention will be described in detail below based on an example thereof. FIG. 1 shows a state in which the automatic hot water supply device for a bathtub is installed in a bathtub.

The automatic water heater 1 is installed at an appropriate location outside the bathtub A. The other end of the automatic water supply pipe 2, one end of which is connected to the top of the automatic water heater 1, is placed directly above the upper end of a hopper 3 vertically attached to the outside of the wall B of the bathroom. The lower end of the hopper 3 is connected to an inlet 4a in the upper part of a circulation fitting 4 bonded to the lower part of the bathtub A. On the other hand, as shown in the figure, one end of a return pipe 5 is connected to the lower part of the outer surface of the circulation fitting 4, and the other end is connected to a circulation pump 6 installed at the lower part of the automatic water heater 1. In addition, circulation fittings 4
One end of the outgoing pipe 7 is connected as an inlet 4b to a side portion near the inlet 4a on the upper outer surface of the pump, and the other end is similarly connected to the circulation pump 6. The circulation fitting 4 projects from the side wall of the bathtub A and constitutes an entrance/exit chamber R for hot water.

Since this automatic hot water supply device for a bathtub has the configuration as detailed above, the hot water heated by the automatic water heater 1 passes through the automatic hot water supply pipe 2 and drops vertically into the hopper 3 from the end thereof. The water is collected and fed into the bathtub A through the circulation fitting 4. When the hot water gradually accumulates in the bathtub A and the water level exceeds the top of the circulation fitting 4, the circulation pump 6 is started.
A portion of the hot water that has already accumulated in the bathtub A is sucked out from the lower part of the circulation fitting 4, passes through the return pipe 5, is returned to the circulation pump 6, and passes through the outgoing pipe 6 again to the circulation fitting 4. is fed into the entrance/exit 4b. The hot water dropped from the hopper 3 into the upper inlet/outlet 4a of the circulation fitting 4 at a certain point is transferred to the inlet/outlet 4b.
It merges with the forceful return hot water that has flowed in from the bathtub A and is pushed into the bathtub A from the upper part of the circulation fitting 4. Therefore, the hot water in the hopper 3 quickly flows into the circulation fitting 4, and a smooth and quick hot water supply operation to the bathtub is realized.

<Effects> Since the automatic water heater for bathtubs according to the present invention has the above-described configuration, the hot water supplied by the automatic water heater is dropped into the bathtub from the hopper via the circulation fitting and accumulates, and the head difference in water level gradually decreases. Even if
When the circulation pump is activated to circulate the hot water in the bathtub, the kinetic energy of the returned hot water is effectively used to combine with the hot water supplied from the hopper and send it into the bathtub, which is a problem that often occurred in the past. The backflow of hot water in the hopper is prevented, and the hot water supply work to the bathtub can be carried out smoothly, quickly and safely, which is extremely effective.

As shown in FIG. 2, if the end of the outgoing pipe 7 connected to the upper end of the circulation fitting 4 is further extended into the circulation fitting 4 and the upper semicircular part of the pipe is cut out, the outgoing The effect of the return hot water sent from the pipe 7 and the hot water dropped into the circulation fitting 4 from the hopper 4 flowing into the bathtub 4 becomes even more remarkable. In addition, it goes without saying that the present invention is not limited to the above embodiments, and may be modified as appropriate without departing from the gist thereof.

[Brief explanation of drawings]

FIG. 1 is a view of an automatic hot water supply device for a bathtub according to the present invention installed in a bathtub, and FIG. 2 is a view of another embodiment of a circulation fitting. 1: automatic water heater, 2: automatic hot water pipe, 3: hopper, 4: circulation fitting, 4a: inlet from the hopper, 4b: inlet from the outgoing pipe, 5: return pipe,
6: Circulation pump, 7: Outgoing pipe, A: Bathtub, R: Entrance/exit room.

Claims (1)

[Scope of utility model registration request] An automatic hot water supply system for a bathtub in which hot water is dropped from an automatic water heater into a hopper via an automatic hot water supply pipe and is sent into the bathtub via a circulation fitting that forms a hot water entrance and exit chamber that projects from the side wall of the bathtub. The apparatus includes an inlet for hot water from the hopper at the top of the circulation fitting, and an inlet for the circulation fitting in a circulation path for circulating hot water from the bathtub through a circulation pump and back into the bathtub. , provided in a lateral part near the inlet from the hopper to the circulation fitting, so that the hot water flowing from the hopper into the circulation fitting is sent into the bathtub together with the force of the hot water flowing into the circulation fitting from the circulation path. An automatic hot water supply device for a bathtub, characterized in that it is configured as follows.