JPH0610557B2 - Bath device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a bath pot device capable of reheating operation, bubble bath operation, and automatic bath hot water supply operation.

<Prior Art> FIG. 6 shows a block diagram of a conventional device. 1 is a bathtub, 2 is a heat exchanger, 3 is a circulation pump, 4 is a hopper for bath hot water supply, 5
Is a three-way valve. During the reheating operation, the three-way valve 5 is switched to the circulation side and the circulation pump 3 is driven, whereby the bath water is circulated to the heat exchanger 2 and heated. In addition, when the bath hot water is supplied, the three-way valve 5 is switched to the hopper 4 side to drive the circulation pump 3.

FIG. 7 shows a block diagram of another conventional device. The same members as those in FIG. 6 are designated by the same reference numerals. 6 is a bath water level sensor, 7 is a short-circuit pipe, 8 is a three-way valve, 9 is an ejector, and 10 is an air introduction passage connected to a negative pressure forming portion of the ejector 9. During the reheating operation, the three-way valve 8 is switched and the bathtub 1
Of water is circulated to the heat exchanger 2, and during operation of the bubble bath, the three-way valve 8 is switched to the side of the short circuit passage 7 to circulate the bath water in a short circuit and the valve of the air introduction passage 10 is opened to open the air. By sucking in from the negative pressure forming portion of the ejector 9,
Bubbles are ejected into the bathtub 1.

<Problems to be Solved by the Invention> However, in the conventional apparatus shown in FIG. 6, when the bubble bath function is to be added by connecting the air introduction path 10 shown by the two-dot chain line, the circulating water from the bathtub 1 must be used. Since it passes through the heat exchanger 2, it has a large pressure loss, and therefore has the drawback that vigorous bubble water cannot be jetted into the bathtub 1. On the other hand, in the conventional device shown in FIG. 7, short-circuit circulation of bath water is possible, so that pressure loss can be reduced and the bubble bath function can be excellently performed. However, when a hopper 4 for bath hot water supply shown by a two-dot chain line is connected to such a device to add an automatic bath hot water supply function, it is necessary to drive the circulation pump 3 for hot water supply.
There is a drawback in that the dynamic pressure acts on the water level sensor 6 and the characteristic water level of the bath water cannot be detected. Further, in the conventional apparatus shown in FIG. 7, when switching from the bubble bath operation or the like to the reheating operation, the high-temperature water heated and accumulated in the heat exchanger 2 is not diluted in the bathtub 1 and remains in the bathtub 1. There was a problem of direct inflow.

Therefore, the present invention solves the above-mentioned drawbacks of the prior art, the pressure loss of the circulating water during bubble bath operation is small, and therefore a sufficient amount of bubbles can be vigorously ejected into the bathtub, and the bath water level during bath hot water operation. The purpose is to provide a compact bathtub device that can be accurately detected, prevents overheated water from flowing directly from the heat exchanger into the bathtub, and can also perform reheating operation and bubble bath operation at the same time. And

<Means for Solving the Problems> A bathtub device according to the present invention includes a circulation passage that guides water from a bathtub to a circulation pump and circulates discharge water from the circulation pump to the bathtub through an ejector, and the circulation passage. A three-way valve for passage switching arranged at a position upstream of the circulation pump, a bypass passage formed by sandwiching the three-way valve, a passage opening / closing valve for heat-up and a heat passage provided in the bypass passage An exchange, a bath hot water drop-in passage connected to the remaining one of the three-way valves, and an air introduction passage connected to the negative pressure forming portion of the ejector, and the bath heating passage during bath hot water operation. The on-off valve is closed and the three-way valve is switched to the hot water drop side, the hot water is dropped from the drop path into the circulation passage and the circulation pump is driven, and during the reheating operation, the passage for the additional heating is opened. The closed valve is opened and the three-way valve is switched to the circulation side to drive the circulation pump.When the bubble bath is operated, the passage opening / closing valve for reheating is closed and the three-way valve is switched to the circulation side to drive the circulation pump. Moreover, it is characterized in that the air introduction path is opened.

Further, in the above configuration, in the case of performing the reheating operation and the bubble bath operation at the same time, the passage opening / closing valve for reheating is opened and the three-way valve is switched to the circulation side to drive the circulation pump, and the air introduction path is set. It is characterized by being configured to open.

<Operation> During bath hot water supply operation, the passage opening / closing valve for reheating in the bypass passage is closed, and the three-way valve for passage switching is switched to the hot water sink side, so the bath water circulates even if the circulation pump is driven. There is nothing to do. Therefore, even if a water level sensor is placed in the circulation passage, it is possible to accurately detect the bath water level without being affected by the dynamic pressure. Therefore, hot water can be supplied to the bathtub accurately.

During reheating operation, the reheating passage opening / closing valve in the bypass passage is opened, and the three-way valve is switched to the circulation path side, so part of the bath water that passes through the circulation passage flows to the bypass passage, and the heat exchanger It is heated, merges again into the circulation passage, and then flows into the bath. Therefore, the high-temperature water heated by the heat exchanger is appropriately temperature-buffered, and the inconvenience of the high-temperature water directly flowing into the bath does not occur.

When the bubble bath is operated, the passage opening / closing valve for reheating is closed, the three-way valve is switched to the circulation side, the car introduction passage is opened, and the circulation pump is driven, so the bath water goes to the heat exchanger side. Can be circulated without. Therefore, the pressure loss is small, the bath water can be vigorously circulated, the air from the air introduction path can be vigorously circulated, the air from the air introduction path can be vigorously sucked, and bubbles can be ejected to the bath. Since it is a three-way valve, there is little pressure loss when passing through the three-way valve.

Also, when performing reheating operation in addition to the bubble bath operation, the three-way valve is switched to the circulation side, the air introduction path is opened, and the passage opening / closing valve for reheating the bypass passage is also opened. Both operations can be performed at the same time.

<Embodiment> FIG. 1 is an overall configuration diagram of an implementation apparatus of the present invention.

20 is a bathtub and 30 is a bath kettle case. In the case 30, members required for bath hot water supply operation, reheating operation, and bubble bath operation are housed and arranged. Reference numeral 31 is a circulation pump provided in the circulation passage 32. By driving the circulation pump 31, bath water is circulated in the circulation passage 32.
Circulate through. An ejector is provided at the return end of the circulation passage 32.
33 is provided, and circulating water is passed through the ejector 33 to the bathtub 20.
Return to.

A three-way valve 38 is provided upstream of the circulation pump 31 in the middle of the circulation passage 32, and a bypass passage 34 is branched so as to sandwich the three-way valve 38. The bypass passage 34 passes through the heat exchanger coil 36 in the heat exchanger 35, and then the circulation passage 32 again.
The upstream side of the circulation pump 31 is joined to the downstream side of the three-way valve 38. The bypass passage 34 has a passage opening / closing valve 37 for reheating.
Is provided.

The inside of the heat exchanger 35 is a hot water storage tank, and the entered water is heated by the burner 39, discharged as needed and used for hot water supply. The water passing through the heat exchange coil 36 is heated by the hot water in the heat exchanger 35.

An air introducing passage 40 is connected to the negative pressure forming portion 33a of the ejector 33, and a jet air valve 41 is provided in the air introducing passage 40.

Reference numeral 50 is a drop path for bath hot water supply, which is connected from the lower end of the drop hopper 51 to the remaining one of the three-way valve 38. A bath hot water supply passage 52 from the heat exchanger 35 faces the drop hopper 51, and a bath hot water supply opening / closing valve 53 is provided in the bath hot water supply passage 52. Reference numeral 55 denotes a float switch, which is configured so that the circulating pump 31 is not driven when the water level of the hopper 51 is below a certain level during hot water supply in the bath.

61 is a controller, which receives a command from the remote control unit 62,
By inputting information from the bath temperature sensor 63, bath water level sensor 64, float switch 55, and other sensors, a predetermined control operation command is issued to the circulation pump 31, the passage opening / closing valve 37, the three-way valve 38, the burner 39, the jet. Air valve 41,
Output to the on-off valve 53, etc. In addition to the main operation switch, the remote control unit 62 has a temperature control dial for the heat exchanger 35,
A bath automatic hot water supply operation switch, a reheating operation switch, a bubble bath operation switch, an automatic operation switch, etc. are provided.

At the time of the automatic bath hot water supply operation, as shown in FIG. 2, the passage opening / closing valve 37 and the jet air valve 41 for blackening shown in black are closed, and the three-way valve 38 is dropped and the passage is switched to the passage 50 side. Then, open the hot water supply on-off valve 53, and open the hopper 5.
The hot water is supplied to 1, and the circulation pump 31 is driven when the water level of the hopper 51 is above a certain level. Hot water is the hopper
It is introduced from 51 into the bath 20 through the drop path 50, the three-way valve 38, the circulation pump 31, and the ejector 33. In this case, since the bath water does not circulate to the circulation passage 32 side, the bath water level sensor 64 is not subjected to the dynamic pressure due to the water flow, and thus the accurate water level can be measured. When the water level of the hopper 51 falls below a predetermined water level, the pump 31 is stopped to prevent idle operation. When hot water is supplied up to the set water level in the bathtub 20, the hot water supply operation is stopped.

During the reheating operation, as shown in FIG. 3, the jet air valve 41 and the bath hot water supply on-off valve 53 shown in black are closed, and the three-way valve 38 is switched to the circulation passage 32 side. Then, the passage opening / closing valve 37 for reheating is opened and the circulation pump 31 is driven. The bath water circulates through the circulation passage 32, and part of the water passing through the circulation passage 32 flows into the bypass passage 34, is heated through the heat exchange coil 36 of the heat exchanger 35, and then passes through the circulation passage 32 again. After joining the circulating water, return to the bathtub 20. The hot water heated by the heat exchange coil 36 must be in the circulation passage 32.
Since the temperature is buffered by the water passing through, the hot water does not flow into the bath 20 as it is. When the bath temperature sensor 63 detects the set temperature, the additional heating operation is stopped. In the case of automatic operation, shift to heat retention mode.

When operating in the bubble bath, as shown in FIG. 4, the passage opening / closing valve 37 for reheating and the opening / closing valve 53 for bath hot water supply are shown in black.
Closed, switching the three-way valve 38 to the circulation passage 32 side,
The jet air valve 41 is opened and the circulation pump 31 is driven. The bath water does not pass through the bypass passage 34,
Return to bathtub 20 through 32. By the circulating water passing through the ejector 33, the air is sucked from the negative pressure forming portion 33a of the ejector 33 through the air introducing passage 40, and is bubbled into the bath 20. Since the bath water does not go to the heat exchange coil 36 side and the three-way valve 38 itself has a better passage of water than the electromagnetic on-off valve, the pressure loss of the circulating water is small, and therefore the circulating water passing through the ejector 33 is small. The vigorous bubble flow is jetted into the bathtub 20.

When it is desired to perform the bubble bath operation and the reheating operation at the same time, the jet air valve 41 may be opened in the state of FIG. 3, and the passage opening / closing valve 37 for reheating may be opened in the state of FIG. That is, the passage opening / closing valve 37 for reheating is opened and the three-way valve 38 is opened.
Is switched to the circulation side, the jet air valve 41 is opened, and the circulation pump 31 is driven. The bath hot water supply on-off valve 53 is closed.

Fig. 5 shows the state of each valve 37, 38, 41, 53 and the state of the circulation pump 31 during each operation of the bath automatic hot water supply operation, the reheating operation, and the bubble bath operation. In the embodiment, the bath reheating and the bath are used. Although the automatic hot water supply is performed by using one heat exchanger 35, the bath heating and the automatic bath hot water supply may be performed by using two separate heat exchangers.

<Effect> The present invention is configured as described above, and during the bath automatic hot water supply operation, the passage opening / closing valve for additional heating is closed, and the three-way valve is switched to the hot water sink side, so that the bath water does not change even if the circulation pump is driven. There is no circulation. Therefore, even if the bath water level sensor is arranged in the circulation passage, the hot water can be supplied by the accurate water level detection without being affected by the water flow.

Also, during the reheating operation, the passage opening / closing valve for reheating in the bypass passage is opened, and the three-way valve is switched to the circulation side, so that high temperature water heated by the heat exchanger through the bypass passage is circulated. It is combined with the circulating water passing through, and is appropriately temperature-buffered and circulated in the bath. Therefore, there is no problem that the high temperature water accumulated in the heat exchanger is directly introduced into the bath at the start of the reheating operation.

In addition, during bubble bath operation, the passage opening / closing valve for reheating in the bypass passage is closed, and the three-way valve is switched to the circulation side, so circulating water does not go to the heat exchanger side, that is, there is little pressure loss inside the ejector. Can pass through. Further, since the three-way valve itself has less pressure loss than an electromagnetic on-off valve or the like, the air suction force by the ejector is strong, and a sufficient amount of bubbles can be jetted into the bathtub with sufficient force.

Further, in the present invention, the reheating operation and the bubble bath operation can be simultaneously performed by opening both the passage opening / closing valve for reheating and the air introduction passage with the three-way valve switched to the circulation side.

In addition, according to the present invention, the automatic bath hot water supply mechanism, the additional heating operation mechanism, and the bubble bath operation mechanism can be configured compactly and at low cost in one case.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an embodiment of the present invention, FIG. 2 is a configuration diagram showing a state during a bath automatic hot water supply operation, FIG. 3 is a configuration diagram showing a state during an additional heating operation, and FIG. FIG. 5 is a configuration diagram showing a state during bath operation, FIG. 5 is a diagram showing states of respective valves and a circulation pump at each operation, and FIGS. 6 and 7 are configuration diagrams of a conventional device, respectively. 20: Bathtub, 31: Circulation pump 32: Circulation passage, 33: Ejector 34: Bypass passage, 35: Heat exchanger 37: Reheating passage opening / closing valve 38: Three-way valve, 40: Air introduction passage 41: Jet air valve , 50: Drop path 51: Hopper

Claims (2)

[Claims] 1. A circulation passage that guides water from a bathtub to a circulation pump and circulates discharge water from the circulation pump to the bathtub through an ejector, and a circulation passage disposed upstream of the circulation pump. A three-way valve for switching a passage, a bypass passage formed by sandwiching the three-way valve, a passage opening / closing valve for heat-up and a heat exchanger provided in the bypass passage, and connected to the remaining one of the three-way valves Has a drop path for bath hot water supply and an air introduction path connected to the negative pressure forming part of the ejector, and closes the passage opening / closing valve for hot water reheating and the three-way valve for hot water drop during hot water supply operation of the bath. Switch to the side to drive the circulation pump while dropping warm water from the drop passage into the circulation passage, and during the reheating operation, open the passage opening / closing valve for the reheating and simultaneously open the three-way valve on the circulation side. Switching the circulation pump is driven by a circulation pump driven by switching the three-way valve while closing the channel opening and closing valve for the reheating to the circulation side during bubble bath operation,
Moreover, a bath hook device characterized in that the air introduction path is opened. 2. When the reheating operation and the bubble bath operation are performed simultaneously, the reheating passage opening / closing valve is opened, the three-way valve is switched to the circulation side to drive the circulation pump, and the air introduction path is set. The bathtub device according to claim 1, which is configured to be opened.