JPH0438428B2 - - 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. 4 shows a configuration diagram of a conventional device. 1 is a bathtub,
2 is a heat exchanger, 3 is a circulation pump, 4 is a three-way valve, 5
is an ejector, and 6 is an on-off valve for an air introduction path connected to the negative pressure forming portion of the ejector 5. 7 is a short circuit path. During reheating operation, the three-way valve 4 is switched to circulate the water in the bathtub 1 to the heat exchanger 2, and during bubble bath operation, the three-way valve 4 is switched to the short-circuit passage 7 side to short-circuit the bathtub water. Bubbles are discharged into the bathtub 1 by circulating the air, opening the on-off valve 5 of the air introduction path, and sucking air from the negative pressure forming part of the ejector 5.

Further, FIG. 5 shows a configuration diagram of another conventional device. This conventional device is also disclosed in Japanese Unexamined Patent Publication No. 62-204747. 1 is a bathtub, 2 is a heat exchanger, and 3 is a circulation pump. In this device, two valves 8 and 9 are provided in place of the three-way valve 4 in FIG. 4,
Further, air is blown using an air pump 10.

<Problems to be Solved by the Invention> However, in the conventional device shown in FIGS. 4 and 5, the three-way valve 4 or two valves 8,
9, the pressure loss during bubble bath operation is large and there is a drawback that a strong jet stream with sufficient bubbles cannot be introduced into the bathtub 1.

In addition, in the device shown in Fig. 4, when switching from bubble bath operation to reheating operation, the heat exchanger 2
There was a problem in that the high-temperature water that had been heated and accumulated inside the bathtub 1 directly flowed into the bathtub 1.

Further, in the device shown in FIG. 5, the air pump 10
Since the air pump 10 is separated from the heat exchanger 2 side and placed separately near the bathtub 1, there is a problem that the heat exchanger 2 and air pump 10 cannot be housed together in one case. It was hot.

Therefore, the present invention solves the drawbacks of the above-mentioned prior art,
The pressure loss of the circulating water during bubble bath operation is small, so a sufficient amount of bubbles can be vigorously sprayed into the bathtub, and superheated water is prevented from suddenly flowing into the bathtub. A bath kettle device that can perform heating operation and bubble bath operation at the same time, and can integrally configure parts such as a heat exchanger necessary for reheating operation and parts necessary for bubble bath operation in one case. For the purpose of providing.

<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 that branches off from the middle of the circulation passage and joins the circulation passage through a heat exchanger, a passage opening/closing valve for reheating provided in the bypass passage, and a negative pressure forming part of the ejector connected to the bypass passage. When only reheating operation is performed without performing bubble bath operation, the reheating passage opening/closing valve is opened and the air introduction passage is closed;
When performing only the bubble bath operation without performing the reheating operation, the air introduction passage is opened and the reheating passage opening/closing valve is closed, and when the reheating operation and the bubble bath operation are performed at the same time, The present invention is characterized in that the reheating passage opening/closing valve and the air introduction passage are configured to be opened.

<Function> During reheating operation, the reheating passage opening/closing valve in the bypass passage is opened, so some of the bath water circulating in the circulation passage flows to the bypass passage by driving the circulation pump and is heated by the heat exchanger. After that, it joins the circulation passage again and circulates into the bathtub. When a bubble bath operation is also performed during the reheating operation, the air introduction passage is also opened in addition to the passage opening/closing valve for reheating. When the air introduction path is opened, air is sucked into the ejector from the negative pressure forming part formed by circulating water passing through the ejector, mixed inside, and ejected into the bathtub as bubbles. If bubble bath operation is not performed at the same time, the air introduction section is closed.

When only bubble bath operation is performed, the reheating passage opening/closing valve is closed and the air introduction passage is opened. By driving the circulation pump, bath water is circulated through the circulation passage, and air is sucked in from the negative pressure forming part of the ejector that is formed at that time.

In the present invention, there is no need to provide a valve in the circulation passage, so there is little pressure loss in the bathtub water circulating in the circulation passage, and therefore, when operating a bubble bath, a sufficient amount of bubbles can be sprayed with sufficient force into the bathtub. be able to.

Also, when reheating the heat, the hot water heated by the heat exchanger always joins with the circulating water before being sent to the bathtub, so the high-temperature water remaining in the heat exchanger is sent directly into the bathtub, making it easier to bathe. No inconvenience, such as causing discomfort to the person, occurs.

Further, according to the present invention, it is possible to perform only reheating, only bubble bath, and both reheating and bubble bath at the same time.

Further, according to the present invention, it is easy to configure components such as a heat exchanger required for reheating operation and components necessary for bubble bath operation in one case.

<Example> FIG. 1 is an overall configuration diagram of an apparatus for implementing the present invention, and FIG. 2 is a control flowchart of driving operations by a controller.

20 is a bathtub, and 30 is a case for a bathtub. Necessary members are housed within the case 30. Reference numeral 31 denotes a circulation pump provided in the circulation passage 32, and when the circulation pump 31 is driven, bath water is circulated through the circulation passage 32. An ejector 33 is provided at the end of the circulation passage 32, and the ejector 33
The circulating water returns to the bathtub 20 through.

From the middle of the circulation passage 32 to the bypass passage 34
The bypass passage 34 passes through a heat exchange coil 36 in a heat exchanger 35 and joins the circulation passage 32 again. The bypass passage 34 is provided with a passage opening/closing valve 37 for reheating. The inside of the heat exchanger 35 is a hot water storage tank, and water that enters the tank is heated by a burner 38, and hot water is discharged as necessary to supply hot water. The water passing through the heat exchange coil 36 is heated by the hot water in the heat exchanger 35.

An air introduction passage 39 is connected to the negative pressure forming portion 33a of the ejector 33, and a jet air valve 40 is provided in the air introduction passage 39.

41 is a controller which receives commands from the remote control unit 42 and inputs information from the bath temperature sensor 43 and other sensors to issue predetermined control operation commands to the circulation pump 31 and the passage opening/closing valve 3.
7, output to the burner 38, jet air valve 40, etc. In addition to the main operation switch, the remote control unit 42 includes a temperature control dial for the heat exchanger 35,
A reheat operation switch and a bubble bath operation switch are provided.

Now, assuming that the main operation switch is turned on, if a reheating operation command is issued (FLOW), and if a bubble bath operation command is not issued (FLOW), the circulation pump 31 will start driving. , the passage opening/closing valve 37 for reheating is opened, and the jet air valve 40 is closed (FLOW). As a result, the bathtub water circulates through the circulation passage 32, and a part of the circulation water flows from the circulation passage 32 into the bypass passage 34.
is heated through the heat exchange coil 36, joins the circulation passage 32 again, and then flows into the ejector 3.
3 into the bathtub 20. The high-temperature water heated by the heat exchange coil 36 joins the circulating water passing through the circulation passage 32, so that its temperature is moderated appropriately, and the bather is prevented from feeling discomfort caused by the high-temperature water directly flowing into the bathtub 20. I won't give it. When the bathtub temperature reaches a predetermined temperature (Froni), the controller 4 receives a signal from the bath temperature sensor 43.
1, the driving of the circulation pump 31 is stopped (flow ho).

When a bubble bath operation command is issued in addition to the reheating operation command (Flow I, B), the circulation pump 31 is turned on, and the jet air valve 40 is opened in addition to the passage opening/closing valve 37 (Flow I). The bathtub water circulates in the circulation passage 32, and a part of it circulates in the bypass passage 34.
is heated through the and the circulation pump 31
Since all the circulating water discharged from the ejector 33 forms a large negative pressure when passing through the ejector 33, air passes through the air introduction passage 39 via the jet air valve 40 and enters the ejector 33 from the negative pressure forming part 33a of the ejector 33. It gets sucked in. Then, it is mixed with the circulating water inside the ejector 33 to become foamy water, which is ejected from the ejector 33 into the bathtub 20. Since the circulation passage 32 is not provided with any obstructions such as valves that cause pressure loss, the circulating water can be passed into the ejector 33 with sufficient discharge force.
Therefore, the suctioned air becomes foamy water effectively enough, and the foamy water can be jetted into the bathtub 20 with sufficient force. During operation, when the bath water is reheated to a predetermined temperature (float),
Only the passage opening/closing valve 37 is closed, and the bubble bath operation continues (Flory).

On the other hand, if the reheating operation command is not issued and only the bubble bath operation command is issued (Flowey, Ch)
At this time, the passage opening/closing valve 37 is closed, the jet air valve 40 is opened, and the circulation pump 31 is driven (Froni). In this case, the bathtub water does not flow to the bypass passage 34 side, but circulates only through the circulation passage 32, and air is sucked in from the negative pressure forming part 33a of the ejector 33 in the same way as described above, and becomes bubbles to the bathtub 2.
It is ejected within 0.

FIG. 3 is a configuration diagram showing a modification of the present invention.
In this example, a heat exchanger 50 for hot water supply and its burner 51 are replaced with an instantaneous heat exchanger 6 for reheating.
It is configured separately from 0, and has so-called 2 cans and 2 waterways. With this configuration, the reheating passage opening/closing valve 37 that should be provided in the bypass passage 34 is omitted, and instead, reheating operation can be performed only by turning on and off the burner 61. That is, when the reheating operation is performed, the burner 61 is combusted, and the water that has passed through the bypass passage 34 is instantaneously heated by the heat exchanger 60. Further, when the reheating operation is not performed, the water that has passed through the bypass passage 34 is not heated by the heat exchanger 60 and is rejoined into the circulation passage 32.

<Effects> The present invention has the above-described configuration, and there is no need to provide a member such as a valve that causes pressure loss in the circulation passage, so that a sufficient amount of bubbles can be efficiently generated during bubble bath operation, and even with sufficient force. The foam can then be ejected into the bathtub through the ejector.

Moreover, during reheating operation, the high-temperature water that has passed through the heat exchanger is always combined with the circulating water and then introduced into the bathtub, so the high-temperature water can flow directly into the bathtub and cause discomfort to the bather. This will solve the problem.

Furthermore, in the present invention, while performing the reheating operation, the bubble bath operation can also be performed at the same time.

In addition, in the present invention, sufficient bubble water and its jetting force are obtained in the ejector by utilizing the vigorously circulating water discharged into the ejector from the circulation passage, so the air generation source such as the air pump is replaced with the bathtub. Therefore, the heat exchanger and other components necessary for reheating operation and the components necessary for bubble bath operation can be compactly housed in one case.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of the implementation device of the present invention, and FIG.
FIG. 3 is a flowchart of control of the driving operation by the controller, FIG. 3 is a block diagram of another embodiment of the present invention, and FIGS. 4 and 5 are block diagrams of conventional devices. 20...bathtub, 30...bath pot case, 31
... Circulation pump, 32 ... Circulation passage, 33 ... Ejector, 34 ... Bypass passage, 35 ... Heat exchanger, 37 ... Reheating passage opening/closing valve, 39 ...
Air introduction path, 40...Jet air valve, 41
...Controller, 60...Heat exchanger.

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 circulation passage. It has a bypass passage that joins together, a passage opening/closing valve for reheating provided in the bypass passage, and an air introduction part connected to the negative pressure forming part of the ejector, and allows reheating operation without performing bubble bath operation. When performing only a bubble bath operation, the passage opening/closing valve for reheating is opened and the air introduction passage is closed, and when only a bubble bath operation is performed without reheating operation, the air introduction passage is opened. At the same time, the passage opening/closing valve for reheating is closed, and when reheating operation and bubble bath operation are performed at the same time, the passage opening/closing valve for reheating and the air introduction passage are opened. Pot device.