JPH0570060B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a bathtub device that can perform bubble bath operation in addition to reheating operation.

<Prior Art> FIG. 2 shows an example of a conventional device. First, this device will be explained. 1 is a bathtub, and 2 is a heat exchanger. 3
is a circulation path which runs from the bathtub 1 through the heat exchange coil 4 of the heat exchanger 2 and back to the bathtub 1. A circulation pump 5 is provided in the circulation path 3;
The end thereof is connected to the bathtub 1 via an ejector 6. 7 is a short circuit path, and a short circuit valve 8 is provided. Also, 9 is a reheating valve. Reference numeral 10 denotes an air introduction path, which is connected to the negative pressure forming section of the ejector 6. 11 is an air suction valve of the air introduction path 10.

When reheating is performed, the short circuit valve 8 and air suction valve 11 are closed, the reheat valve 9 is opened, and the circulation pump 5 is driven. The bathtub water passes through the circulation path 3 to the heat exchange coil 4, where it is heated and then transferred to the bathtub 1.
Return to

When operating a bubble bath, close the reheating valve 9, open the short-circuit pipe 8 and air suction valve 11, and turn on the circulation pump 5.
to drive. The bathtub water does not go to the heat exchange coil 4, but instead passes through the short circuit 7 and circulates through the ejector 6 to the bathtub 1. At the same time, air from the air introduction path 10 is sucked into the ejector 6 from the negative pressure forming part of the ejector 6, and is ejected into the bathtub 1 in the form of bubbles.

As a device similar to the device shown in Fig. 2,
There is a device described in the -204747 publication.

<Problems to be Solved by the Invention> However, in the conventional device described above, when the short-circuit valve 8 is provided in the short-circuit path 7 and a bubble bath operation is performed, the short-circuit valve 8 is
Since the bathtub water is circulated through the bubble bath, there is a large pressure loss during bubble bath operation, which has the drawback of reducing the ability to generate bubbles.

Further, when the reheating operation is performed after the bubble bath operation is completed, there is a problem that the superheated water that has been heated while being stagnant in the heat exchange coil 4 may flow into the bathtub.

Therefore, the present invention solves the drawbacks of the above-mentioned prior art,
To provide a bathtub device which has little pressure loss during bubble bath operation and prevents superheated water from being introduced directly into the bathtub.

<Means for Solving the Problems> The bathtub device of the present invention includes a circulation passage that guides water from the bathtub to a circulation pump and circulates water discharged from the circulation pump to the bathtub via an ejector;
a bypass passage branched from the middle of the circulation passage and connected to the negative pressure forming part of the ejector through a heat exchanger; a passage opening/closing valve for reheating provided in the bypass passage; and an air introduction passage connected to the bypass passage on the downstream side of the heat exchanger, and when reheating, the passage opening/closing valve for reheating is opened and the air introduction passage is closed, and during a bubble bath, the air introduction passage is connected to the bypass passage. The present invention is characterized in that the air introduction passage is opened and the reheating passage opening/closing valve is closed.

<Function> At the time of reheating, the reheating passage opening/closing valve is opened, the air introduction passage is closed, and the circulation pump is driven. The bathtub water returns to the bathtub through the circulation passage.
A part of the bath water flows from the circulation passage to the bypass passage, is heated by the heat exchanger, and is further sucked into the ejector from the negative pressure forming part of the ejector. Then, the heated water is mixed with the water that has been circulating through the circulation passage in the ejector, the temperature of which is relaxed, and the water flows into the bathtub.

During bubble bath operation, the air introduction passage is opened, the reheating passage opening/closing valve is closed, and the circulation pump is driven. The air from the air introduction path is sucked into the ejector from the negative pressure forming part of the ejector by the negative pressure formed by the circulating water passing through the ejector, and is mixed with the circulating water to form bubbles,
Discharged into the bathtub.

Since the circulation passage is not equipped with an on-off valve, there is little pressure loss along the way, and the air is discharged into the ejector with sufficient force and mixed effectively with the air sucked inside to eliminate bubbles. bring about.

Furthermore, when reheating, the hot water heated through the heat exchanger is diluted by the circulating water that has passed through the circulation path in the ejector, so there is no problem such as when superheated water flows directly into the bathtub.

<Example> FIG. 1 is a configuration diagram of an apparatus implementing the present invention. A bathtub device for the bathtub 1 is configured within the dashed line indicated by the reference numeral 20. Circulation pump 21 from bathtub 1
A circulation passage 22 is provided which goes from the circulation pump 21 to the bathtub 1 and returns to the bathtub 1. An ejector 23 is provided at the end of this circulation passage 22. The circulating water that passes through the circulation passage 22 from the bathtub 1 is
It returns to the bathtub 1 through the ejector 23. A bypass passage 24 branches off from the middle of the circulation passage 22, and the bypass passage 24 passes through a heat exchange coil 26 of a heat exchanger 25, and its end is connected to the negative pressure forming portion 23a of the ejector 23. A passage opening/closing valve 2 for reheating is installed in the middle of the bypass passage 24.
7 is provided. Also, a bypass passage 24 downstream of the heat exchanger 25 and the passage opening/closing valve 27
An air introduction path 28 is connected to the air introduction path 28, and a jet air valve 29 is provided in the air introduction path 28. In the heat exchanger 25, the water that enters is heated by a burner 30, and the hot water is discharged for hot water supply. And the heat exchange coil 26 is inside the heat exchanger 25,
Heated by heated hot water. 31 is a bath temperature sensor. Reference numeral 32 denotes a controller that controls the circulation pump 21, reheating passage opening/closing valve 27, jet air valve 29, burner 30, etc. by inputting commands from the remote control unit 33 and information from the bath temperature sensor 31. Issue operation commands.

Now, when the reheating operation switch is turned on by the remote control unit 33, the passage opening/closing valve 27 is opened, the jet air valve 29 is closed, and the circulation pump 21 is started to be driven. bathtub 1
While circulating through the circulation passage 22, a portion of the water flows into the bypass passage 24 and is heated as it passes through the heat exchange coil 26. The heated water is then sucked into the ejector 23 from the negative pressure forming part 23a of the ejector 23 through the bypass passage 24,
It mixes with the circulating water and enters the bathtub 1. When the bath temperature sensor 31 detects the set temperature, circulation is stopped.

On the other hand, when the bubble bath operation is selected by the remote control unit 33, the jet air valve 29 is opened, the passage opening/closing valve 27 is closed, and the circulation pump 21 is started to be driven. The circulating water passing through the ejector 23 causes the ejector 23 to
Negative pressure is formed inside, and air that has passed through the bypass passage 24 from the air introduction path 28 is sucked in from the negative pressure forming portion 23a of the ejector 23. Then, it is mixed with circulating water in the ejector 23 and discharged into the bathtub 1 as foam. In this case, the circulation passage 22
Since there is no valve or the like installed in the bathtub 1, there is little pressure loss, and the vigorously circulating water can sufficiently create bubbles in the ejector 23, allowing strong foaming water to be spouted into the bathtub 1. I can do it.

Note that the water in the heat exchanger 25 is heated by the burner 30 to a predetermined temperature when the reheat operation switch is turned on by the remote control unit 33 and when the hot water supply operation switch is turned on. ing. Therefore, even during the bubble bath operation, if the hot water supply operation switch is turned on at the same time, the water remaining in the heat exchange coil 26 is heated.
However, even when the water superheated in this way is sent to the bathtub 1 side by starting the reheating operation, such superheated water is mixed with circulating water in the ejector 23, and its temperature is moderated. Ru.

Moreover, only negative pressure is applied to the heat exchange coil 26.

<Effects> The present invention has the above-described configuration, and a circulation passage without any valve or the like is provided in the middle, and air is sucked into the circulation passage, so that a sufficient foaming effect and a spouting effect into the bathtub can be achieved. can be achieved.

Moreover, when reheating the heat, by switching the opening and closing of the valve, a part of the circulating water passing through the circulation passage is guided to the heat exchanger and heated, and the heated water is mixed with the circulating water again and circulated to the bathtub. This prevents hot water from suddenly flowing into the bathtub and causing discomfort.

In addition, both the reheating operation and the bubble bath operation can be suitably performed without complicating the configuration of the device.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an apparatus implementing the present invention, and FIG. 2 is a block diagram of a conventional apparatus. 1: Bathtub, 20: Bath pot device, 21: Circulation pump, 22: Circulation passage, 23: Ejector, 24:
Bypass passage, 25: Heat exchanger, 27: Reheating passage opening/closing valve, 28: Air introduction passage, 30: Burner, 32: Controller, 33: Remote control unit.

Claims (1)

[Claims] 1. A circulation passage that leads water from the bathtub to a circulation pump and circulates water discharged from the circulation pump to the bathtub via an ejector, and a circulation passage that branches off from the middle of the circulation passage and passes through a heat exchanger to the negative side of the ejector. a bypass passage connected to the pressure forming section; a passage opening/closing valve for reheating provided in the bypass passage; and an air introduction passage connected to the bypass passage downstream of the passage opening/closing valve and the heat exchanger. and is configured to open the reheating passage opening/closing valve and close the air introduction passage during reheating, and to open the air introduction passage and close the reheating passage opening/closing valve during a bubble bath. A bath kettle device characterized by: